Answer:
Cluster sampling
Step-by-step explanation:
The sampling technique used by Home Depot to select randomly 60 check out lines during a certain week in order to determine customers opinion of their pricing is called cluster sampling.
Cluster sampling is a sampling technique which is obtained by dividing the population into groups and selecting all individuals from within a random sample of the groups.
I think you omitted some options from the question which should include cluster sampling as the answer is not included in the options you gave in the question.