Which research designs will allow cause-and-effect conclusions?

experimental

Explanation:

Experimental research is described as a research design or study that is based strictly on scientific research processes. Experimental research generally includes a specific hypothesis, and two different types of variable i. e, one variable is being manipulated by the researcher and the other variable is being used to be measured, compared, and calculated in a research study. However, an experimental research design is research that is being completed or analyzed in a particular controlled environment and provides a cause and effect relationship.