The correct option is B depressed
Elated means to be ecstatically happy. The opposite of elated is depressed, or in a state of unhappiness or despondency. Hence, Option B is correct. Among the rest of the options, exasperated means intensely irritated and frustrated, desperate means feeling or showing a hopeless sense that a situation is so bad as to be impossible to deal with, anxious means feeling or showing worry, nervousness, or unease about something with an uncertain outcome. These options do not express this antonym, hence incorrect.