Select the sentence that properly uses parallel structure: A) His morning routine involved feeding the fish, then he opened the curtains, swept the floor, and finally he remembered to water the plants.

B) His morning routine involved feeding the fish, afterward he opened the curtains, sweeping the floor, then he watered the plants.

C) His morning routine involved feeding the fish, opened the curtains, swept the floor, and watering the plants.

D) His morning routine involved feeding the fish, opening the curtains, sweeping the floor, and watering the plants.