Answer: It is convenience sampling method and Option 'e' is correct.
Step-by-step explanation:
Since we have given that the sample is chosen by asking our 40 closest friends.
So, we know that
In Simple random sampling, every member has equal chance in the sample.
In systemic random sampling, every nth member has to be selected.
In stratified random sampling, population is break into group, and then each member is chosen from every group.
In cluster random sampling, population is break into group, and then each member is chosen from some of the group.
and Convenience random sampling, sample is chosen according to their will and convenience, then member is selected from that sample.
Here sample of closest friends is chosen for their convenience
Hence, it is convenience sampling method and Option 'e' is correct.
