Answer: Rosenberg's Self-Esteem Scale
Explanation:
Self-esteem is the subjective evaluation of an individual of their own worth. It encompasses how an individual believe in himself or herself as well as the emotional states of the individual like triumph, shame, despair, and pride.
The most reliable tool to measure a person's current self-esteem level is the Rosenberg's Self-Esteem Scale. The scale is a self-report measure of self-esteem that comprises of ten items which are related to feelings about self worth and one has to answer on a four point scale that ranges from "strongly agree" to "strongly disagree".