Most likely it's C, thinking of "Othello" and of "Romeo and Juliet". Both Shakespearean tragic stories are centred on the tragic consequences of the others' 'evil' actions against the heroes, Othello, Romeo and Juliet.
Greg's going to the gym, to run on the treadmill.
It takes time and effort to become a strong presidential candidate. It matters that we pick the right candidate rather than the person who doesn’t have a “long-time” plan.
In the second sentence, the adjective is delighted. In the third sentence, the adjective is large. The first sentence doesn't contain an adjective.