Question 19 just to make sure i’m correct

The answer would be A. Realistic
Because you can measure weight... But, it isn't realistic to think you can lose 50 pounds in two weeks. 

A is the correct answer
Losing 50 pounds in two weeks would be more or less impossible.

B is an acceptable answer because he can measure how much weight he loss
C is acceptable because losing 50 pounds in two weeks is what he wishes to do
D is acceptable because it says exactly what he will do, and gives an amount of time

Therefore A.) Realistic is the correct answer. His goal was rejected because it was not realistic.