Aperson's mental and emotional health is most directly affected by
a. weight
b. self-confidence
c. heredity
d. level of exercise

Explanation:

Self-confidence is part of the self-esteem. It's about of trusting in yourself, your abilities, your knowledge, your capability to achieve something, that's self-confidence. In other words, it's about feeling confidence about your skills and abilities.

Having a good mental and emotional health implies having self-confidence, because a person that's in a healthy psychological state will perceive all his or her abilities to achieve goals, also that person will know his or her limits. Basically, self-confidence affects emotional health. A person cannot have emotional and mental health without having self-confidence.

Therefore, the right answer is B.

the answer the third choice the letter c