A professor 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 in working at a restaurant as a youth. From this scenario, it can be inferred that the initial idea for the professor's study stems from: A. past research. B. his common sense and intuition or gut feeling. C. a scientific theory. D.his observation of an actual event.

The correct answer is D.his observation of an actual event.

Explanation:

pts

A professor 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 in working at a restaurant as a youth. From this scenario, it can be inferred that the initial idea for the professor's study stems from his observation of an actual event.

the correct answer is "hematoma formation, with ligaments that are stretched, partially, of fully torn" ankle sprain are produced by an injury to the tough bands of tissue (ligaments) that surround and connect the bones of the leg to the foot. this causes several damage to the ankle including hematoma formation and ligament injury .