The answer is B. - Ivan Pavlov
The control group would constitute the control group in a true experimental study.
In scientific research, control groups are used to establish causality by isolating the effects of independent variables. Investigators change the independent variable in the treatment group and keep it constant in the control group. Then compare the results of these groups.
A control group is required for the actual experiment. A control group is a group of study participants who resemble the experimental group but do not receive an experimental treatment. The control group provides reliable baseline data against which experimental results can be compared.
Learn more about the control group here: brainly.com/question/24163400
#SPJ4
Answer: Crops providing significant food supplies were exchanged. Some of the crops Europeans brought to the New World have become food source staples around the world. These crops include wheat, barley, soybeans, rice, and various leafy vegetables.
Explanation:
Bc ppl don't have the money to go watch "live" anymore bc the jacked the prices up big time when my dad was growing up tickets were $20 know there like $200+