Correct Answer: Unruly

Solution : The correct option is the second option.

Explanation:
Unruly means difficult to control or discipline, often associated with disobedience or a lack of conformity. It aligns closely with the meaning of rebellious, describing someone who resists authority or established rules.

The meanings of the other options are as follows:

• Manageable: able to be controlled or handled easily.
• Happy: feeling or expressing joy or contentment.
• Obedient: willing to comply with rules or orders; submissive.

Therefore, the correct answer is unruly.