Question

which is the best way to complete the text? while it is true that some species of chameleons have the ability to change their skin ______ typically use this attribute to regulate their body temperatures—not to elude detection. color; they color, they color. they color they

Explanation:

The first part of the sentence states a fact about chameleons' skin color change ability, and the second part explains the purpose of this ability. A semicolon is used here to connect two closely related independent clauses, which is grammatically correct. A comma alone would create a comma splice, a period would make the two clauses feel disconnected, and no punctuation would create a run-on sentence.

Answer:

color; they