In a research with a small total population, each element is numbered on separate slips, all slips are put in a box, and the researcher picks them out one by one without looking until the desired sample size is reached. This technique is called

Numbering units on slips, mixing them in a box, and drawing blindly is the fishbowl sampling method.

Snowball sampling recruits new participants through referrals, not by drawing slips.

Stratified sampling first divides the population into strata before selecting.

Cluster sampling draws whole naturally occurring groups, not individual slips.

The fishbowl method is a simple physical way to perform simple random sampling.

It suits a small, manageable population where every unit can be listed on a slip.