Answer:
a. Demand-control-support model
Explanation:
Demand-control-support model is a form or model of job stress developed by R. Karasek and his associates that suggests that high needs, low authority, and little guidance at work enhance risk for ill health, especially coronary artery disease.
It suggests that in a job or working setting, job related stress is emanates or comes up from high needs, low authority, and little guidance at work enhance risk for ill health.
Workers are bound to have job stress when there is high need or expectations on them from the job, this high demand on most occassions, leads to an artery disease.
Other areas that can lead to job stres are on the areas of low authority, and little guidance at work.
All these factors increases ones chances of developing an artery disease as a result of job related stress.