The fight-or-flight reaction involves an outpouring of into the bloodstream.

The correct answer is  cortisol, epinephrine, norepinephrine.

The fight-or-flight reaction or response is the reaction under the control of sympathetic nervous system which occurs  in response to a stressful situation. A hormonal cascade which occurs during thi reaction includes the secretion of catecholamines (norepinephrine and epinephrine) as well as estrogen, testosterone, and cortisol.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

they absorb it i think

not sure

you