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.