When an experimenter draws a conclusion that he assumes will apply to all situations set up similarly to his test situation, even though he cannot possibly have examined all possible test scenarios, the experimenter is using what kind of reasoning?

Deductive reasoning.

Explanation:

Hello,

Deductive reasoning lies on the proposal of a hypothesis and its subsequent substantiation before any observation is carried out since the statement says that "he assumes will apply to all situations" he's proposing something before observing it.

Best regards.

the answer is b. dilution