7. Sarah experimented with 100 betta fish. She wanted to know if increased temperatures affected food consumption. She divided them into two groups of 50 fish each: Group A and Group B. Group
A was maintained at room temperature (20 degrees Celsius). The temperature of Group B was
raised to 40 degrees Celsius. Which group was the control group?
a. There was no control group
b. All betta fish were in the control group
e. Group A
d. Group B