Answer:
# The circled hypothesis is that the scientists are testing;
• The incidence of colon cancer in Japanese and Caucasian people is higher in the United States than in Japan.
#The elements of the experiment in this context are in the category (IV, DV and Control)
The independent variable links to type of people being tested.
The dependent variable is the incidence of colon cancer.
The control is where the people live.
Step-by-step explanation: