The nervous system is responsible for our fight-or-flight response.
a. autonomic
b. parasympathetic
c. somatic
d. sympathetic

Explanation:

The fight-or-flight reaction (further described hyperarousal, or the acute stress rejoinder) is a physiological response that transpires in reply to a recognized adverse effect, assault, or warning to survival. It was originaly reported by Walter Bradford Cannon.

The autonomic nervous system has two elements, the sympathetic nervous system and the parasympathetic nervous method. The sympathetic nervous system works same as a gas accelerator in a car. It triggers the fight-or-flight reaction, giving the body with a rupture of strength so that it can react to recognized hazards.

not sure but try c two haploid cells

explanation:

the backbone of the dna and rna compound is sugar phosphate.