Scout Ahead https://www.scoutahead.org/plans/reptile-and-amphibian-study-merit-badge/questions

Which of this applies to you?

Answering these takes the parts that are not for you out of Reptile and Amphibian Study Merit Badge. Nothing is required, nothing is kept on the server, and nothing is ever hidden because a question went unanswered. A step that might apply to you stays on the list and is marked.

Requirement 8: your own animal for a month, or somebody else's for three?

The badge says do ONE of the following. One month against three months is the obvious comparison and the wrong one. The short route is the one where an animal is your responsibility, and has to have somewhere to go afterwards.

Requirement 9: which TWO of the three?

The badge says do TWO of the following, so this one takes more than one answer. One of the three is at night and depends on the season; one of them overlaps work you have already done in requirement 1.