Final answer:
A group of resting sea otters is collectively called a raft, referencing their behavior of congregating together in the water, often secured by kelp to prevent drifting. The correct answer is B) Raft.
Step-by-step explanation:
A group of resting sea otters is called a raft. Sea otters are an aquatic mammal that lives in the ocean and is well-adapted to swim. They often rest in groups on the water's surface, joining together using kelp or by wrapping themselves in kelp to stay united, forming what is known as a raft.
This is similar to how some fish swim in schools, coordinating their movements through various forms of communication, including aural signals, to respond to threats without chaos.
"Raft" can refer to different things depending on the context:
Watercraft: A raft is a flat structure made of buoyant materials (like logs, barrels, or inflatable tubes) lashed together to form a platform that floats on water. It's often used for transportation, recreation, or as a temporary floating platform.