Correct Answer: Loyal

Solution : The fourth option is the correct answer.

When describing someone as faithful, it implies a strong sense of reliability, trustworthiness, and dedication to fulfilling promises and duties. Similarly, loyal signifies a steadfast and devoted adherence to commitments, displaying unwavering support and fidelity.

The meanings of other options are as follows:

• Daring means willing to take risks or face danger; adventurous.
• Unfaithful means not adhering to promises, duties, or loyalty; betraying trust.
• Cheerful means displaying happiness or joy; optimistic and positive.

Therefore, the correct answer is loyal.