The main reason self-confidence is important in human relations is because

Aself-confidence makes you seem more interesting to other people.
Bforming relationships involves risk.
Cthe alternative to self-confidence is no confidence.
Dself-confidence makes you appear important in the eyes of other people

Verified Answer :

Dself-confidence makes you appear important in the eyes of other people, this is because if you have no self-confidence, they don't concentrate that much on you, and you can't trust yourself, your feelings, or what you do. so then other people see you as 'not needed'