Hey there!
Your answer if 3) Particularly.
This is because it's saying that CPR is a good and effective skill to know, particularly(or especially) if you babysit. Particular and too particular wouldn't work because they're not grammatically correct and do not explain the circumstance in which having CPR as a skill would be effective well enough.
Hope this helps!
Eh not really
i haven’t accomplished much yet, and there’s a lot of things i regret
The answer would be thesis statement
The correct question to ask is "Why did the author write this text?" By asking this question, we can better understand the motive behind the text, whether it be to persuade the reader, to be informative, or to simply entertain with narrative.