Answer:
The answer is D. 48 + t
Explanation:
A is wrong because you are adding to Jill's height
B is wrong because you are multiplying to her height
C is wrong because you are subtracting her age from her height and the question states she is taller than 48 inches
I think it is possible that there is missing information in this question as well because depending on how much taller Jill is, it could also be B.