Christina has swim practice before school most days. After school and before dinner, she likes to relax, see friends, or watch television. She has only a small window of time to study after dinner because she goes to bed early to get up for practice. As a result, Christina has not been finishing her work on time and has struggled to study for some classes.

When is the best time of day for Christina to study?
A. in the morning, instead of going to swim practice
B. in the late afternoon, instead of relaxing
C. in the early evening ,during dinner
D. in the late evening, before bed