The main idea is about Dolphins. The 2 key details are how they take care of there babies and about their teeth.
Below I have bolded the parts of speech:
Jill bought a new dress for the party.
Jill (subject) bought (verb) a new dress (indirect object) for the party (direct object).
Answer: E. subject→verb→indirect object→direct object
Hope this helps!
The answer is a. selecting the right medium.
I Hope this helps.
If any farther questions lmk