Answer:
Option: B. A constant set of conditions in an experiment.
Explanation:
The scientific method is the process of the hypothesis that examined through scientific way including experiments or observations. The Scientific method is a process of inductive reasoning from observations and verification by experiments.
Answer:
fees and expenses, nominal interest rate, and taxes
Explanation: The real investment is understood as the money that is invested in tangible and productive assets such as machinery and factories in order to make profit, as opposed to investing in securities or other financial instruments. Investment tends to increase in the stage of the business cycle known as boom, in which the economy is expanding.