A. Good-humored
B. Self-confident
C. Modest
D. Inquisitive
Explanations:
(A) Good humored is the most positive one, because it's nice to have a good humored person, while on the other hand sarcastic is more of a boring, less positive, connotation word.
(B) Self-confident is the best, because if you use conceited, people are gonna think of it as the person being to over/full of theirself, while self confident shows that you're basically confident of yourself, then people won't think of it to be bad.
(C) Modest is best to use, because mousy describes to be like a little mouse, shy and all that. Kinda baby-ish. But using the word modest makes it less negative, and has a little different meaning.
(D) We wouldn't use nosy, because that's automatically rude, etc.
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