Makenna Is Starting Her First Job as a Teacher

Makenna is starting her first job as a teacher.To effectively motivate her students,Makenna should

A) set goals that are easy to meet so she can reward her students often.
B) not set goals for them because they should be intrinsically motivated.
C) allow each student to set his own goals so that everyone is likely to succeed.
D) set challenging and specific goals that are not too difficult or too easy to encourage persistence and concentration during lessons.