In order to prove she does know something about African-Americans and science, Rebecca Skloot recounts what medical experiment?

the correct answer is the name of the author of the quotation appears at the text leading up to it   apex 2018

the gas pressure p, gas volume v, and gas temperature t are given in the formula:   pv=nrt,

r is the gas constant, and n is the number of gas moles.

if the container is cooled and remains under atmospheric pressure, where r is a constant that does not change, the volume of the container remains the same, the conclusion is drawn that, with all other values ​​unchanged, the number of gas moles n, is decreases.

the right answer is a.

i had this on usatestprep and i put c; not 100% if it will   be correct if not i am sorry