2nd points giveaway for my ladies and gents

Experiments were conducted to try to teach chimpanzees sign language

Which sentences are punctuated correctly? check all that apply. andrew's favorite vegetables are: cucumbers, green beans, and red peppers. darren told me about his travels to different tropical islands: hawaii, puerto rico, and jamaica. there were several activities to choose from at the resort: snorkeling, swimming, and hiking. samantha enjoyed many types of music, jazz, classical, hip hop, country, and heavy metal. on my way to the movies, i had to pick up: roger, miguel, kimberly, and bev.

Why was jefferson chosen as the primary writer of the declaration of independence?