Question 1. Answer depends on a/c type! Looks as if the examiner has a particular a/c model in mind!
Incidentally, no answer is correct for the A319/320/321 as the pilot has to select idle thrust.
Question 3. No completely correct answers here, either!
B is "more" co rrect, but many states don't allow "no decision height" Cat 3B operations.
It appears that the person who set these questions is not "au fait" with AWOPS
Preppy.