Correct Answer: firmness

Solution : The correct choice is the third option .

Tenacity refers to the quality of being very determined and persistent. Among the options, firmness is the closest in meaning, as it implies steadfastness and resoluteness, which are characteristics of tenacity.

The meanings of the other options are as follows:

• Idleness : The state of being inactive, doing nothing, or lacking purposeful activity.
• Timidity : A lack of self-confidence or courage, often resulting in hesitation or shyness.
• Cowardice : Lack of bravery or courage, especially in the face of danger or difficulty. It implies a tendency to be fearful and avoid challenging situations.