Answer:
Experimental
Step-by-step explanation:
Experimental Research Design- It is primarily used to explore the cause and effect relationships and to study the relationship between different variables. Researchers use this research design to compare 2 or more groups of 1 or more measures. In experimental design, the researcher tries to understand the relationship between dependent and independent variables. An experimental research is contemplated to be successful only when the researcher states that the change in the dependent variable is only because of the manipulation of the independent variable.
There are 3 principles of Experimental research design: randomization replication, and local control.