Answer:
Longitudinal design
Explanation:
Longitudinal design: Also referred to as a panel study or longitudinal survey. It is described as a research design that includes the observations of the same variables repeatedly for either long or short periods on time. The variable used in the research, for example, can be different individuals. Fundamentally, the longitudinal research design collects information or data about an individual or a group of individuals.
Types:
1. Panel study.
2. Cohort study.
The following statement best describes the sample used in the longitudinal type of descriptive design.
At one point, the value of the United States dollar was set according to the gold standard. One of these examples is the fixed exchange rate. The gold exchange standard guarantees the fixed exchange rate to the currency of another country that uses the gold standard.
The answer would be letter A.
