Free SAT Practice Question

Question 1 of 1
ID: DSAT-RW-85
Section: Digital SAT Reading & Writing (RW) - Broadly Writing - Standard English Conventions
Topic: Boundaries
Difficulty level: Medium

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In 2022, neuroscientists tracking hippocampal activity in Egyptian fruit bats used lightweight wireless loggers during free-flight sessions in a subterranean aviary. After calibrating place fields in a familiar roost tunnel and then releasing the animals into a maze of newly constructed caverns, the team reported that place-cell firing rates surged as bats approached a familiar ______ whereas exploratory flights through unfamiliar caverns produced irregular, meandering traces.

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

Aperch;
Bperch,
Cperch:
Dperch
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