The correct option is A Unrest
Antonyms are words which have the opposite meaning in comparison to the other. Option A)unrest is correct as the word unrest means a state of dissatisfaction, disturbance, and agitation, typically involving public demonstrations or disorder and the word recline means lean or lie back in a relaxed position with the back supported. The other options are wrong as rest, sleep, and decline mean cease work or movement in order to relax, sleep, or recover strength, a condition of body and mind which typically recurs for several hours every night, in which the nervous system is inactive, the eyes closed, the postural muscles relaxed, and consciousness practically suspended, and (typically of something regarded as good) become smaller, fewer, or less; decrease respectively. The correct answer is A)unrest.