Answer:
d. The results of the memory test
Explanation:
The results of the memory test is the independent variable which depends on the study time. In the study, the study time is the independent variable while the result of the test is the dependent variable. The independent variable relies on changes in the dependent variable.
Is this historical or something I can’t tell
The answer is B Biological perspective
Perhaps the most single valuable authority you have as president in this way is to issue an executive order, which can commit troops to a conflict for a limited about of time without Congressional approval. Tools of foreign policy would include sending in diplomats to try to negotiate peaceful terms.