Question

the article states:
but too much light can quiet the chorus and keep them from breeding. some migratory birds navigate by the stars. artificial lights can throw them off course.
which phrase from the passage helps you understand the meaning of the word navigate?
a. quiet the chorus
b. keep them from breeding
c. throw them off course
d. artificial lights

Explanation:

The word "navigate" means to find one's way. The phrase "throw them off course" implies a disruption in the process of finding the right path, which is related to navigating. Options A and B are about other bird - related behaviors (noise and breeding) not related to direction - finding. Option D is just an object (artificial lights) and not an action related to navigation.

Answer:

C. throw them off course