<h2>
Hello!</h2>
The answer is:
A.

<h2>Why?</h2>
To solve the problem, we need to perform the shown operation.
We have the functions:

So, performing the following operation, we have:



Hence, we have that the correct option is:
A. 
Have a nice day!
Answer:
make the picture more clear its hard to see.
Step-by-step explanation:
Subtract what Megan ate from the whole.
4/4-3/4 = 1/4.
Megan did not eat 1/4th of the cookie