Terence is a graduate student studying the behavior of canines. He is currently developing a study in which he wants to carefully, and with precise control, introduce various stimuli into the canines' environment and observe their reactions. Terence's mentor recommends the following observational method:

Observational method/Field experiment

Explanation:

A field experiment is conducted on a daily bases. In this field experiment, the experimenter still manipulates the independent variables.

But this happened only in real-life settings. In this experiment, the experimenter was not in that condition to control the extraneous variables. This experiment can conduct real life.

Thus Terence mentor recommends the observational method/field experiment.