According to research findings,what has been found to be associated with higher grades

A)  writing down everything your instructor says 
B)  attending class regularly 
C)  putting off studying until just before an exam 
D)  not changing answers on tests

Instructor

An individual responsible for teaching or imparting knowledge to students in educational settings.

Attending Class

The act of being present and participating in the scheduled academic sessions as part of an educational curriculum.

Putting Off

The act of delaying or postponing something, often due to hesitation or reluctance.