Option B) Snowball Sampling is correct.
Its the correct answer because -
- Snowball sampling is applied where the persons who are involved
in the research recruit the other persons for study or
testing.
 
- It is used where the potential participants are hard to
find.
 
- It is also called as refferal sampling.
 
- Snowball sampling is a non-probability sampling method and the
researchers use their own judgmental skills and thinking to recruit
participants.Therefore the researchers will select those
participants who are more known in the population,liked by
population and their opinions should also be acceptable by the
respondents.
 
- So the persons who did not posses these qualities
will have a low probability of being selected.
 
Snowball sampling is done in 2 Steps -
- Identify potential subjects in the population.
 
- Ask those subjects to recruit other peoples by giving their
names.The subjects here which will recruit other subjects will
search for the same characteristics,traits and opinions like they
posses in themselves.
 
Kindly rate my answer.ThankYou.