Question

select the words that best complete the sentences. sharks do not have a single bone in their bodies. instead, their skeleton is made entirely of cartilage. cartilage is the same material that the human nose and ears are of. cartilage weighs less than bone, allowing sharks to swim briskly w persuaded than if they had bones. muffled lunged composed

Explanation:

"Composed" is the correct verb - form in the context of the sentence structure "is made of" and "are composed of" which are common expressions to describe the material - makeup of something. The other words "persuaded", "muffled", "lunged" do not fit the context as they have meanings unrelated to the description of the material of the human nose, ears, and shark skeletons. Also, "entirely" is already filled in correctly in the first blank to emphasize that the shark's skeleton is completely made of cartilage.

Answer:

composed