The correct answer is C. The suffix tells the reader that the meaning is related to "having the quality of something."
Explanation:
The word "altruistic" is used to describe the quality of being concerned about others rather than only thinking about oneself. This word includes the root "altrui" that derives from Latin and means "somebody else" and the suffix -ic that is used in English to form adjectives or to form words that describe qualities. For example, words such as democratic, enthusiastic, or pacific that have this suffix are all qualities. According to this, the suffix in the word tells the reader the word refers to a quality (Option C.)
