Humphreys' collecting data for the Tearoom Trade study under the pretense that he was a lookout is an example of a violation of the principle of:

it was douglas macarthur..

john maynard keynes developed new economic theories in response to the : b) great depression of the 1930s. his theories are so important that they are known as "keynesianism". in his works he supports the idea of a government with deeper involvement and intervention to end the great depression.

i believe the answer is c.

c. hope this