Heathcliff was dangerously sick; and while he lay at the worst he would have me constantly by his pillow; i suppose he felt i did a good deal for him, and he hadn’t the wit to guess that i was compelled to do it. in the sentence from the passage, what does compelled to do it mean? a) i felt honored just to be with him. b) i felt a love that could not separate us. c) i felt i was obligated to take care of him. d) i felt revolted to care for such a sick man.