Correct Answer: egotism

Solution : The correct choice is the fourth option .

The sentence describes someone who is unable to accept criticism due to his excessive pride or self-importance, which aligns with the meaning of conceit. Egotism refers to an exaggerated sense of self-importance or self-centeredness, leading to an inability to acknowledge or accept criticism.

The meanings of the other options are as follows:

• Prejudice is a preconceived opinion that is not based on reason or actual experience.
• Modesty is the quality of being unassuming or moderate in the estimation of one's abilities or achievements.
• Cowardice means a lack of bravery or courage in facing difficult or dangerous situations.