Answer:
A. there is a control group and a treatment group
Explanation:
In a randomized controlled experiment there is a control group and a treatment group. Randomized controlled experiments are are highly structured experiments in which manager obtains the data to work smarter based on the resources available. These are use din business environment and not time consuming or costly ; all you need to do is to have the data available of the business segment you want to evaluate. Randomization makes one feels more confident that any result he get is actually caused by the independent variable of interest.
