Answer:
D
Step-by-step explanation:
I dislike these kinds of questions. I could argue either of 2 answers - b and d.
b says that her error was that she wrote two expressions that are not equivalent and that is true. She did not write equivalent expressions.
d says she didn't use a common factor to both terms and that is true.
The actual answer is that she made a silly error which we all often do.
8 * 9 is 72
so the distributive property should be
9(5 + 8)
So, what's the answer? I would pick D, but hold your nose when you enter it.