Gabrielle's mornings are busy because she helps her little sister get ready for school. During the school day, she is alert and focuses well on her class work. In the afternoon, she hangs out with friends or goes to the mall. In the evenings, she has a babysitting job two days a week. Later at night, she feels too tired to study and just wants to relax. As a result, her grades are suffering.

When is the best time of day for Gabrielle to study?

in the morning instead of helping her sister get ready for school
in the afternoon instead of hanging out with friends and going to the mall
in the early evening instead of babysitting two days a week
later at night when she is tired instead of relaxing