The antonym of 'profuse' is not on that list, and we don't use the expression 'opt out' to mean 'select' or 'choose' or 'identify.' 'Opt out' means to exercise your option to withdraw or decline.
A multiple choice question is:A) a test question which gives you a choice of four or five possible answersB) set up rather like this answer, with each possibility labeled with a letterC) the form of...