A group used in a study or in an experiment, which does not get treatment by the scientists and is used as a foundation to determine the functions of the other tested subjects is known as the control group. The control group is only found in an experimental investigation.
Answer: D she is believed to have been the first female mathematician
Explanation:
Answer:
B. Diminishing returns
Explanation:
As the proportion of one factor in a combination of factors is increased, with sufficient investment, each initiative will reach a point where no further improvement is possible, first the marginal and then the average product of that factor will diminish, therefore the investments create no additional returns.