Correct Answer: Naive

Solution : The correct choice is the first option.

Gullible and naive are synonyms because they both describe a tendency to believe in or trust others easily, often without being suspicious or critical. If someone is gullible, they are easily deceived or manipulated. Likewise, if someone is naive, they may lack experience or sophistication.

The meanings of the other options are as follows:

• Candid: This means being straightforward, honest, and sincere in speech or expression, often in a way that is direct and without reserve.
• Dreary: This refers to something that is dull, bleak, and lifeless; it is depressing.
• Nosy: This means to show too much curiosity about other people's affairs; to be overly inquisitive.