Correct Answer: Power

Solution : The third option is the correct choice.

The most appropriate synonym for "strength" is "power" because both terms denote the ability or capacity to perform tasks or overcome challenges. While "strength" primarily focuses on physical robustness, "power" encompasses a broader range, including physical, mental, or influential capabilities.

The meanings of other options are as follows:

• Recluse: A person who lives a solitary life and avoids social interactions.
• Weakness: The lack of physical or mental strength, or a point of vulnerability.
• Disability: A physical or mental condition that limits a person's movements, senses, or activities.

Therefore, the correct answer is power.