Select the option that is opposite in meaning to the underlined word. He nodded absently throughout the meeting.

Step-by-step solution

Absently means in an absentminded or preoccupied manner; its antonyms must be alertly which means in mentally perceptive and responsive way. Other options capably, agitatedly and dreamily mean in a competent capable manner, in a physically disturbed manner and in a dreamy manner respectively.