Alex had a/an birthday party for my grandmother in this sentence correct article

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.