Answer:
The best answer would be D. The men are serious and they are also doomed to an early death
Explanation:
The word "grave" gives us the picture of serious, distressed men, which would be understandable under the circumstances.
It means the scientific study of sight and the behavior of light, or the properties of transmission and deflection of other forms of radiation
It's a place where Muslims worship their God (allah)
The answer to this one is Aristotle
The compound sentence is B