He seems to have a propensity to fight.

The correct answer is D. proclivity.

A propensity is a natural tendency or inclination towards something. In this case, the person seems to have a natural tendency or inclination towards fighting.

Scepticism is a doubt or disbelief. Penchant is a strong liking or fondness for something. Aversion is a strong dislike or hatred of something.

Here are some examples of how the word “propensity” can be used in

• He has a propensity for violence.
• She has a propensity for gambling.
• I have a propensity for overeating.

I hope this helps!