Time for a newborn to regain birth weight

What it is

The time an infant takes to get back to his normal weight is asked as a single item, and the answer given is 10 days. The infant retains his normal wt in 10 days. The options offered were 1 - 2 days, 7 days, 10 days and 30 days, and the one marked is 10 days, with a handwritten 10 - 14 days beside it. So the number to hold is 10 days, and the hand note beside it gives 10 - 14 days. Nothing else is given about the infant on the page: the whole item is that one line and its four times.