He lay there, purple, a dark, angry purple in the face, and never even looked at them when they came in. then, as they were standing there, wondering what to do, he had suddenly opened one eye. oh, what a difference it would have made, what a difference to their memory of him, how much easier to tell people about it, if he had only opened both! but no—one eye only. it glared at them a moment and then… went out. which sentence  best  states the idea this passage to develop?   a. the colonel's daughters are already struggling to remember their father, so they worry about his skin and eye coloration.  b. the colonel felt such a great sense of sorrow at the idea of leaving his daughters behind that he could not look at them directly.  c. the colonel suffered from a severe health condition that caused his skin to look purple and made him seem angry all the time.  d. the colonel's daughters are more concerned with the appearances surrounding his death than with grief at losing their father.