Astudy plan should include setting up a study area, establishing a study schedule, and
a. recording your grades
b. memorizing everything, word for word
c. studying at the library
d. keeping a study notebook

D). Keeping a study notebook.

Explanation:

A study plan is illustrated as a schedule that assists the students to classify and set up their learning goals regarding the subjects they are going to pursue along with the study time requirement for each subject. It includes the details of subject prerequisites of the course with a time indication that suggests the time for a planned subject to be studied in order to accomplish the credit/course requirements.

As per the above description, a study plan should include setting up a study area, establishing a study schedule, and keeping a study notebook as it requires a meticulous analysis of the subjects or projects enrolled in or prepared to study in future along with the time indication. Thus, option D is the correct answer.