Aprofessor conducts a study on tipping behavior in restaurants and hotels, which is designed to determine whether factors such as posture and communication influence tips left by customers. he conducts this study based on his experience of working at a restaurant when he was young. from this scenario, it can be inferred that the initial idea for the professor's study stems from

Past Experience

Explanation:

Professor conducts the study on a tip given by the customer to the waiter with the observation and own experience working in a restaurant with a specific behavior which includes the posture and communication. when a professor working in the restaurant he has been observed the behavior of the customer and gets an initial idea to observe the behavior of the people and find out the reason behind this specific behavior. the researcher used his experience and applied it to another population to know the specific behavior of people. the researcher used here the applied research.

the best and most correct answer among the choices provided by the question is the second choice "less supportive to the war of 1812"

the war of 1812 was a military conflict that lasted from june 1812 to february 1815, fought between the united states of america and the united kingdom, its north american colonies, and its native american allies.

i hope my answer has come to your . god bless and have a nice day ahead!