Answer:
Sampling
Step-by-step explanation:
SAMPLING METHOD can be defined as the process or way of chosen a group of people from a population doing survey for the sole aim of gathering important data or useful information about the selected group in which the collected data from the sample of the people or group of individuals selected can be use to create a pool instead of collecting data from them individually by searching for them one after the other , which is why SAMPLING METHOD is effective and important because it help to save cost and time when carrying out a research.
Therefore based on the information given a method called SAMPLING is used to create that pool.