Answer:
The simile is comparing life to a box of chocolates means that life is full of surprises, and there is no prediction of what will happen.
Explanation:
A simile is a figure of speech used by writers in making a comparison between two dissimilar or unrelated things. It uses words such as "like", "as" in making the comparison.
In the given statement, the mother compares life to a box of chocolates. This means that life is unpredictable, full of surprises. And there is no knowing what will happen.