Recent Research Has Shown That an Effective Way of Increasing

Recent research has shown that an effective way of increasing school-related self-esteem is to

A) teach them knowledge and skills that can be the basis of real achievements.
B) praise students regardless of real effort or achievement.
C) encourage students to rate themselves favorably on self-image questionnaires.
D) teach students how to praise themselves even when they don't try to do well.