What is a stressor?
a. ​a stimulus that serves as a source of stress
b. ​any event that generates a statistically uniform response among a general population
c. ​a byproduct of stress
d. ​a negative life event that causes physical illness or psychological disorder?

Respuesta :

The answer is A. This is an ecological condition, external stimulus or an occasion that creates pressure to a living being. 
An occasion that triggers the pressure reaction may include: 
natural stressors 
every day stretch occasions 
life changes 
work environment stressors 
compound stressors 
social stressor