Answer:
D. adolescence
Explanation:
Based on the information provided within the question it can be said that Brittany most likely period of development known as adolescence. This period is characterized mainly by being the period in which an individual goes through puberty, which causes that child to develop in many ways. Changing them from a child into an adult. Such changes include weight gain and increased height as Brittany has undergone.
Creating a study plan allows you to see how you spend your time, and ensures that you are setting aside enough time outside of class to complete homework assignments, study for tests, and review and retain the information you are learning.
Because of the earths rotation around the sun.
C Nuclear Fission is the right answer