Answer: 4) Social Readjustment Rating Scale (SRRS)
Step-by-step explanation:
Social Readjustment Rating Scale (SRRS) is the tool for measuring stress of a person through assigning a certain number to the life situation where some amount of adjustment is required .This number is of life changing units for readjustment.This mechanism includes negative events as well as positive events of life.
According to question,Pedro has certain life event list which is marked and then assigned number is calculated for determining about health issue risk that can occur in upcoming two year for client.Thus,Social Readjustment Rating Scale is being used.
Other options are incorrect because Catastrophic Index, Wechsler Adull Intelligence Scale and Biopsychosocial Approach to Health and Well being are not the tools used by Pedro with client.