Answer:
A : temperament . . . emotionality
Explanation:
The best description about the brain stem is: it is the most important organ of our body's survival. It connects the brain and the spinal cord, controls the vital organs like the lungs and heart and it also coordinates the many essential body reflexes.
C would be the best choice
Dark occur in the stroma, and do not use light energy
Mammoths, sabertooth tigers, wooly rhinoceroses just a few.