Answer:
d) the group that is subjected to the change that the independent variable represents.
Explanation:
Experimental group: The experimental group is also referred to as a treatment group because this is the group that receives treatment in a given experiment. Here, the group refers to test subjects like animals, people, plants, etc. In the experimental group, the independent variable is being changed.
In an experimental research study, the group which is an experimental group is the group that is subjected to the change that the independent variable represents.
I believe what you're looking for is economics, but I could be wrong.
The reason why early development its because of the pilgrims. When they came to America and later rebelled against New England causing the <span>revoulutionary war </span>
The correct answer is Sigmund Freud. His studies on psycho-neuroses around the 20th century is considered to be the basis of psychology and psychiatry.