Question

question 3 the article says: so why do we have those little bits of bone? no one knows for sure. its a mystery that scientists are still trying to solve. which means almost the same as mystery? a. place b. puzzle c. thought d. crowd

Explanation:

To solve this, we analyze the meaning of "mystery" in the context. A mystery is something unknown that needs solving. "Place" refers to a location, "thought" is a mental idea, "crowd" is a group of people. "Puzzle" means a problem or mystery to be solved, so it's the closest in meaning.

Answer:

B. puzzle