Verified Answer :

The answer is A.) 1/4(n-64) because if you distribute the 1/4 onto the parentheses it becomes n/4 - 16 which is equivalent to 1/4 - 16 if n were to equal 1.

Apocrophon

The answer is A.
What you can do is distribute the 1/4 or 4 into the parentheses and see if it is the expression you want:
\(\frac{1}{4}(n-64)\\ \frac{1}{4}n-(\frac{64}{4})\\\frac{1}{4}n-16\\\\4(n-4)\\4n-16\\\\4(n-64)\\4n-(4*64)\\4n-256\)
Since only option A simplifies to \(\frac{1}{4}n-16\), A is your answer.