Although most people speak at a rate of 120 to 180 words a minute, the brain can process words at a rate of
(a) 100 to 200 words a minute.
(b) 200 to 400 words a minute.
(c) 400 to 800 words a minute.(d) 600 to 900 words a minute.(e) 1000 to 1200 words a minute.

c. 400 to 800 words a minute.

Explanation:

Our brain is unbelievably efficient. Although humans can speak from 120 to 150 words per minute, the brain can process from 400 to 800 words per minute. Apparently this could make listening much easier, but the effect is just the opposite. Since we are able to process a speaker's words and still have a good "mental break" time, we are persuaded to stop listening when we think of something else.

i do believe   by (keeping an organized record of all sources he or she referenced)good luck.

explanation:

. austria-hungary began seizing british colonies in africa.