If Self-Concept Is One of the Variables in a Quantitative

If self-concept is one of the variables in a quantitative study, which of the following operational definitions would be favorably critiqued?

A) Each individual will be given an overview of the concept of the self and asked to write a definition telling about his or her own self-concept.
B) For purposes of this study, the self-concept will be defined as the subject's score on the Piers-Harris Children's Self-Concept scale.
C) Self-concept is an individual's view of himself and/or herself. It is the positive and negative feelings of self-definition and self-worth and factors that are important to the self.
D) Self-concept will be measured as positive or negative.