A. Parents, teachers, and others
B. Our own "inner voice."
C. Table and Chair
D. Comparing ourselves with others.

Solution

C. Table and Chair

Explanation

<ul><li>a) Positive support from others builds self-esteem.</li><li>b) Our internal thoughts (inner voice) greatly influence self-worth.</li><li>d) Though comparing ourselves with others is common, it often harms self-esteem rather than building it.</li><li>c) Table and Chair are non-living objects and have no role in developing self-esteem.</li></ul>