Answer:
B) The network going down represents a stressor, while Delia's backache is a strain.
Explanation:
Stressor: The term "stressor" is described as any of the different experience, event, or environmental stimulus in an individual's life that generally causes stress. Thus, these experiences or events are often perceived as challenges or threats to the person's life and it can either be psychological or physical.
Strain: In organisational behavior, the term "strain" is described as an individual's act of straining in which nervousness occurs that results from "mental stress". It could also be referred as "nervous strain". However, strain lasts for quite a long-time and causes a continuous "toxic-stress".
In the question above, the correct answer is option B.