Explanation:

- The word "fascinating" refers to something that captures interest or attention in a very appealing or engaging way.

- Option 1: appealing - This word means attractive or interesting, which aligns closely with the meaning of "fascinating".

- Correct Answer

- Option 2: boring - This is the opposite of fascinating. If something is boring, it fails to capture interest.

- Option 3: stupid - This refers to a lack of intelligence or common sense, which doesn’t relate to being fascinating.

- Option 4: tiring - This means causing one to need rest or sleep and relates more to physical or emotional exhaustion. It is not synonymous with fascinating.