Every night before studying, sonya has a banana. one day, she has no bananas left, so she eats a cookie. sonya notices that she has a hard time studying. the next night, sonya has a banana again and does not have a hard time studying. what new question would be best for sonya to ask based on her discovery? a. do all students study at night? b. how often do i need to study to get good grades? c. do all types of fruit me study? d. what are my classmates' favorite foods? (its c)