According to Buddha, one can obtain peace of mind by drawing out the arrow of lamentation, complaint, and grief. Weeping and grieving only increase pain and make the body suffer. One who becomes composed after removing grief, and overcomes all sorrow, will become free from sorrow and be blessed.
Source: The Sermon at Benares, Chapter 8
The examiner looks for two key ideas: (1) weeping/grieving does not bring peace — it increases suffering, and (2) the solution — drawing out the arrow of lamentation/grief and becoming composed. Both points together fetch full marks. Quote or closely paraphrase the Buddha's words from the sermon for accuracy.