Digital SAT: Pronouns 3

1. A museum installed several interactive screens to help visitors explore its collection of ancient maps. Most of the screens displayed only basic information, but one screen allowed visitors to compare the maps with modern satellite images. The curator said the screen was especially useful because _____ helped visitors understand how coastlines had changed over time.

Which choice completes the text so that it conforms to the conventions of Standard English?

2. A team of agricultural researchers tested several irrigation systems designed to reduce water waste on farms. One system used soil sensors to determine exactly when crops needed moisture, while older systems released water on a fixed schedule. The researchers recommended the sensor-based system because _____ allowed farmers to use less water without lowering crop yields.

Which choice completes the text so that it conforms to the conventions of Standard English?

3. A biology teacher prepared several microscope slides so students could compare plant and animal cells. The slides were labeled carefully, but two of them were accidentally placed in the wrong tray before class began. When the teacher noticed the mistake, she told the students that neither slide was ready because _____ needed to be relabeled before the activity could continue.

Which choice completes the text so that it conforms to the conventions of Standard English?

4. A city library began lending portable Wi-Fi hotspots to residents who did not have reliable internet access at home. After several months, librarians reviewed usage data and found that the hotspots were checked out almost every day. The library director said the devices were valuable because _____ helped students complete assignments outside of school hours.

Which choice completes the text so that it conforms to the conventions of Standard English?

5. A team of engineers tested several emergency radios designed for use after hurricanes. Unlike standard radios, the new models could be powered by hand cranks as well as by solar panels. Relief workers praised the radios because _____ batteries could be recharged even when electrical service was unavailable.

Which choice completes the text so that it conforms to the conventions of Standard English?

6. A group of students built several model bridges for a physics demonstration. Most of the bridges collapsed when weights were added to the center, but one bridge remained standing even after the final weight was placed on it. The teacher explained that the bridge was stronger because _____ supports distributed the weight more evenly.

Which choice completes the text so that it conforms to the conventions of Standard English?

7. A team of chemists tested several reusable containers designed to keep laboratory samples at a constant temperature. Most of the containers allowed small temperature changes over time, but one container maintained the target temperature for more than six hours. The chemists concluded that the container was effective because _____ insulated the samples from heat in the surrounding room.

Which choice completes the text so that it conforms to the conventions of Standard English?

8. A city transportation department tested several bike-share stations to see which designs worked best in cold weather. Some stations failed when snow blocked the locking mechanism, but one station continued operating throughout the winter. Officials said the station was reliable because _____ locks remained functional even after repeated freezing and thawing.

Which choice completes the text so that it conforms to the conventions of Standard English?

9. A group of volunteers planted several young trees along a busy avenue to provide shade and improve air quality. During the first summer, most of the trees grew slowly, but two saplings near a storm drain grew especially quickly. The volunteers observed that the saplings thrived because _____ received extra water after heavy rains.

Which choice completes the text so that it conforms to the conventions of Standard English?

10. A team of researchers tested several noise-canceling headphones in crowded train stations. Most models reduced steady background noise but struggled with sudden announcements and nearby conversations. One model performed better than the others because _____ adjusted quickly to changes in the surrounding sound.

Which choice completes the text so that it conforms to the conventions of Standard English?