I think A, because rodents already live in winter months when little food is available, but I'm not sure.
Answer:

Explanation:
Given
See attachment for the graph
Required
Determine the frequency
Frequency (F) is calculated as:

Where
T = Time to complete a period
From the attachment, the wave complete a cycle or period in 3 seconds..
So:


--- Approximated
Answer:
The force of gravity on a 700 kg satellite if its 10 km above Earth's surface is given by
=
= 3984378 m / 
Explanation:
The force of gravity on a 700 kg satellite if its 10 km above Earth's surface is given by
=
= 3984378 m / 