Answer:
The correct answer is option B. observation.
Step-by-step explanation:
Observation is a method of data collection which involves the use of all the senses to study people in their natural setting. The process involve gathering knowledge about a phenomena by making observations. The aim here is to focus on human behavior, human interaction with phenomenon and the use of phenomenon..
In the above example, actual setting and behavioral data is required. So, the most appropriate method for data collection here will be observation.