Which sentence uses a verb that agrees with its subject?

the post offices in our area opens at 9 a. m.

their behavior during the performances was very good.

a new book by ruth randell, the author of many mysteries, arrive in bookstores soon.

the dresses on the rack in the back of the department was on sale.

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.