Marylou, a Mother of a Fifth Grader, Was Praising Her

Marylou, a mother of a fifth grader, was praising her son for being smart after his first exam.She ______.

A) was proud of his ability
B) changed her method of praising after reading the Dweck study that after praising children for being smart after the first test, they chose the easy test the second time
C) was glad he did not have to study hard for the test
D) was happy his grades were improving