He is loved for his altruism

Step 1: Analyze the question We need the word that is opposite in meaning to "altruism."

Step 2: Explain the concept Altruism means selfless concern for the well-being of others, that is, being generous and putting other people's interests before your own.

Step 3: Check each option

• A. Benevolence: kindness and goodwill. This is similar to altruism, not opposite.
• B. Sincerity: honesty and genuineness. This is unrelated to altruism, so it is not an antonym.
• C. Selfishness: concern for oneself at the expense of others. This is the direct opposite of altruism.
• D. Selflessness: putting others first. This is a synonym of altruism, not an antonym.

Step 4: Answer The correct option is C. selfishness.

Exam tip: In antonym questions, first spot the synonyms among the options (here A and D) and eliminate them, since examiners often include them as traps. Then look for the word that expresses the reverse idea. Also remember that "altruism" comes from the Latin alter (other), so it is about others, while "selfishness" is about self.