Choose the correct collective noun from the options below and fill in the blanks.

An ____ of butterflies fluttered around the flowers.

Swarm

The correct collective noun for a group of butterflies is "Swarm."OPTION 2

Explanation:

Ensemble typically refers to a group of musicians or performers.

Collection is a general term for a group of various items.

Troop usually refers to a group of soldiers or scouts.

Swarm is specifically used for a large group of flying insects such as bees, wasps, or butterflies.

So, the correct sentence would be: "An swarm of butterflies fluttered around the flowers."