Which of the following is an example of a negative feedback altering homeostatic control? A) a person's heart rate drops as she runs B) a person shivering as temperatures rise on a hot summer day C) the production of oxytocin (a hormone) increases as oxytocin levels rise in the body D) the concentration of salt in urine increases after eating a large bag of salty chips

I believe the answer is B

Option D, the concentration of salt in urine increases after eating a large bag of salty chips

Explanation:

A negative feedback reduces the activity causing any uncertain output that disturbs the homeostatic control. For example - if temperature of the body rises, signals are send via negative feedback loop to bring it down to normal body temperature.

Like wise when the concentration of salt in urine rises, we feel thirsty. Thus water is taken to cope up with the increased salt content in body after eating chips.

Here, the activity (i. e eating of salty chips) disturbing homeostatic control is reduced by increasing the salt content in urine that makes the person thirsty.

Hence, option D is correct