Alex is outgoing, therefore; he makes
friends easily.

i usually like green vegetables; but the broccoli i ate today was terrible.

it was an emergency; otherwise, i would not have called you so early in the morning.

ms. scully is a great teacher; because she has been working at the school for decades.
which is punctuated correctly?

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.