Fight or flight, because according to Hans Selye, this occurs at times of danger when your adrenaline is heightened.
The retinas of night hunting animals have more rod cells which enable them to see better with minimum light.
Answer:
A is the answer to the question
A night person is more active and awake at night whilst a morning person is the opposite.
Genetic drift is the variation of population allele frequency, natural selection changes allele frequency by favoring those alleles that give an organism a reproductive fitness advantage