Question 19 of 20 : Select the best answer for the question.
19. The Moche, Nazca, and Huari were all indigenous civilizations in wha
today.
A. Brazil
B. Mexico
C. Bolivia
D. Peru
O Mark for review (Will be highlighted on the review page)

Going to say A. Brazil, Hope this helps! enjoy your day/night.

Explanation:

this null effect is caused by a weak manipulation and ineffective internal validity. in a scientific study, as the one dr. morimoto is trying to perfom, internal validity refers to the confidence placed in the cause-effect relationship and to how well an experiment is done and able to eliminate confounding variables.        

answer; earthquake;