Correct Answer: Malcontent

Solution : The correct answer is the first option.

This term is derived from the Latin word "malcontentus“, where "mal" means "bad" or "evil“, and "contentus“ means "satisfied“ or "content.“ A malcontent is a person who is dissatisfied or discontented, often expressing unhappiness or discontent with their current circumstances.

The meanings of the other options are as follows:

Heresy: This term refers to beliefs or opinions that deviate from or go against established doctrines, especially in religious contexts.

Malleable: Malleable refers to the ability to be easily shaped or influenced.

Miser: A miser is someone who hoards wealth and is reluctant to spend money.

Therefore, the correct word is malcontent.