I think those are terms related to the sell of drugs and I don't think this is a good forum to discuss that.
Answer:
Classroom training/instruction
Explanation:
Classroom training is a widely used system of training that aim to present information to multiple persons at the same time. It is one of the least expensive means of information dissemination and allows for a great deal of interaction between the group. It sometimes include hands-on-practice and ensures that the same topic or course is taught to all individuals.
Answer: D. Online survey
Explanation: Interview survey is time consuming and John does not have the luxury of time. Phone survey is fast but needs money and John is cash trapped. Longitudinal survey requires that a long time is spent on the survey and it is expensive. John does not have both the time and money. Mail survey is cheap but needs time to get in the answers and John does not have much time. The best option for John is online survey because online survey are less time consuming, cheaper, and results gotten faster.
Selective learning is the answer to this question