Question

select the sentence from the article that is least important to be included in its summary.
a the signature reflects how an object reacts to magnetism at a given time.
b yet somehow the females find their way back to the spot where they were hatched.
c scientists knew that sea turtles use magnetism to guide themselves in general directions.
d it is almost as if they have a built - in gps system similar to what is found in cellphones or cars.

Explanation:

The question is about identifying the least important sentence for a summary, likely related to sea turtles and magnetism. Option B talks about females finding their way back to hatching spots, which is more about navigation behavior. Options A, C, D relate to magnetism (signature, sea turtles using magnetism, GPS - like system), so B is least relevant to the magnetism - focused summary.

Answer:

B. Yet somehow the females find their way back to the spot where they were hatched.