Figure 39-3 Use the Figure to Answer the Corresponding Question(s)

Multiple Choice

Figure 39-3
Use the figure to answer the corresponding question(s) .
-Which of the following is an example of a positive feedback mechanism?

A) increase in body temperature when exposed to cold
B) increased muscle contractions during labor
C) decreased insulin production in response to low blood sugar
D) increased respiration rate in response to decreased blood pH
E) Both choices A and B are correct.