Ever since cornelius was hypnotized, he has been flapping his arms whenever he hears anyone say, "hello." cornelius's arm-flapping most likely results from

I believe the answer is: a posthypnotic suggestion.

a posthypnotic suggestion refers to the event when people who are being put under a hypnosis are unable to recall the things that happen to them under the  hypnotic influence. The erased memory usually could only come back after receiving a certain trigger (sound or a word)

colony: virginia

1: 1607,john smith

2: british were looking for gold and land

3: near oceans and theres forests

4: fishing? ithink

5: sometimes

the answer is:

c. economic output