Stress is
a. positive or negative, depending on circumstances
b. a body's automatic physical response
c. a negative reaction to outside influences
d. a and b only

Stress is .
A.positive or negative, depending on circumstances
B.a body's automatic physical response
C.a negative reaction to outside influences
D.a and b only

the answer is D. in my opinion.

The answer might be d

Perform surgeries is the correct answer.