According to the text, one function of mourning is to allow public expression of grief to channel and contain private grief. Which is NOT an example of this?
1) Holding three days of active sorrow among some Muslim groups
2) Annual rituals such as visiting a grave to celebrate the anniversary of a death
3) The Jewish custom of sitting Shiva at home for a month
4) Following a Hindu death, holding 10 days of ceremonies beginning at the next full moon