Is the process by which we appraise and cope with environmental threats and challenges called which require change or adaptation.

a) eustress; pressure
b) distress; adjustment
c) stress; stressors
d) eustress; distress

a) Eustress; distress

Explanation:

Eustress is the process by which we appraise and cope with environmental threats and challenges called distress which require change or adaptation.

the word eustress means positive stress and it is short-term and can be used in managing pressure.

Distress can result from challenges and environmental threats and can be managed by adaptive coping or by removing/managing the stressors.