After reading a book about parrots, Tani wants to learn more about them. Which question could be answered through scientific investigation?

Scientific investigations can test and measure what materials an eggshell contains. The question “What substances make up an eggshell?” can be answered by examining its composition. “Best-tasting,” “most beautiful,” and “best pet” depend on personal preferences, so they cannot be settled objectively by scientific investigation.

AI-written and checked against the verified answer.