<span>supportive of her ideas</span>
I would probably say plump.
Essentially, in this question, you're looking for the word that would be the least insulting. More broadly, when asked about positive connotation, you're looking for a word that is not viewed negatively.
Words like fat and cheap have negative connotations, especially when applied to people. Words like plump and frugal are much more positive.
I was having breakfast when the phone rang.
I think it is C. A man but i am not so sure