The mother is trying her best to convince her daughter. I think the mother is acting fine.
The correct answer is B. One and a half hour.
It will take approximately one and a half hour for each consumed drink to leave your body.
Again this is obviously an approximate answer as different drinks might take up different time too. Also it depends upon the persons immune system too.
For example, If you drink a large (250ml) glass of wine, your body takes about 3 hours to break down the alcohol. If you drink 1 pint of beer, your body takes about 2 hours to break it down.
