Answer the following question: Fact 1: Polyps usually reproduce asexually. Fact 2: Coral polyps are united into colonies. Given the two facts above, what reproduce asexually?

Options are:
[1]. graptolites
[2]. orchids
[3]. frogs
[4]. coral colonies
[5]. Most plants
[6]. mice
[7]. spread flower seeds
[8]. fish
Answer:
[4].