Easily made angry.

• A. ingenious
• B. irascible
• C. inimical
• D. inundate

Answer: (B)

Understanding how a word conveys temperament and emotional reactions is key here. Eager to anger or quick to become irritated describes a quick-tempered nature, and the word that captures that precisely is irascible. It signals a tendency to anger with relatively little provocation.

By contrast, ingenious means clever or inventive, which says little about mood or anger. Inimical describes hostility or opposition, not the frequency of anger. Inundate means to flood or overwhelm, usually with something like water or tasks, and doesn’t relate to temperament at all. So the term that best matches "easily made angry" is irascible.