Step 1: Identifying daily hassles.
Losing a water bottle is a minor, everyday inconvenienceThis fits the category of a daily hassleTherefore, P corresponds to (iv)
Step 2: Identifying traumatic events.
Surviving a terrorist attack and experiencing recurring nightmares is characteristic of traumaHence, Q corresponds to (i)
Step 3: Identifying chronic stressors.
Fear of job loss involves prolonged uncertainty and ongoing stressThis makes R a chronic stressor, corresponding to (ii)
Step 4: Identifying major life events.
The birth of a first child is a significant life transition involving major psychological and social changesThus, S corresponds to (iii)
Step 5: Final conclusion.
The correct matching is P-(iv), Q-(i), R-(ii), and S-(iii)