Dr. fikshunal is interested in how our bodies respond to being excluded from a group. therefore, she decides to monitor the heart rate and cortisol levels of participants as they engage in their environment and indicate experiences when they felt ostracized. in this scenario, dr. fikshunal is:

In this scenario, Dr Fikshunal is studying the daily physiology.
Human physiology is the study of the physical, mechanical and biochemical functions of the human body, tissues and organs. Dr Fikshunal studies the effects of social stress and isolation. Every type of stress affects many different systems of the human body, from the immune system to the heart and brain function. In this example, cortisol is a steroid hormone often called as the "stress hormone", since under stressful conditions cortisol is increased.

The answer would be age 18.

Eating right and exercising daily