Answer:
A
Step-by-step explanation:
Look through the answer choices:
A. This is definitely possible. The solid cheese was likely a solid square, but the melted cheese probably became a "blob", with no real shape - amorphous almost.
B. Unlikely; the cheese is still cheese. It didn't go through any chemical change that would affect its properties, so solid and melted cheese will taste the same.
C. Unlikely; substances only change color when they go through a chemical change. However, change of matter (melting, in this case) is a physical change, so the color should still be the same: if the solid was yellow, the melted cheese will also be yellow.
D. Wrong; when substances change state of matter, their masses don't change. Why? Mass is the measure of the amount of matter in a substance. The melted form of a substance has the same amount of matter as the solid form.
Thus, the answer is A.
Hope this helps!