Answer:
The Exchange Rate
Explanation:
An exchange rate is the value of a country's currency vs. that of another country or economic zone. Most exchange rates are free-floating and will rise or fall based on supply and demand in the market.
I think the answer is letter D
Answer:d. reliability.
Explanation:Research reliability refers to the fact that a research method yield stable and consistent outcome.
This means the same method can be used multiple times but still produce the same outcome such as when a professor asks the same question twice but only changing the structure of the question.
A method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.