Answer:
The correct option is a) Cluster.
Step-by-step explanation:
Consider the provided information.
Types of sampling:
- Systematic sampling: list of elements is counted off.
- Simple random sample: It is a subset of the population chosen from a larger set.
- Cluster sampling: It divides the population into groups, usually geographically.
- Stratified sampling: It divide population into groups called strata. but this time population might be separated into males and females
Here, the population is divided into geographical blocks,
Thus, the type of sampling is cluster.
Therefore the correct option is a) Cluster.