Answer:
C
Step-by-step explanation:
She needs 1/4 c and 1/2 c (or 1/2 and 1/4, it's the same both ways because it is addition)
A shows 1/2 and 1/4
B shows 2/8 (which can be reduced to 1/4) and 4/8 (which can be reduced to 1/2)
C shows 1/2 and 4/8 (which can be reduced to 1/2)
D shows 4/8 (which can be reduced to 1/2) and 1/4
so the only choice that does not show the correct about of butter (1/2 and 1/4) is answer C (the one in the bottom left corner)
