The correct option is A 2
Tom has 11 chocolates.
Tom will take 5 and pack them into the first box.
So, the number of remaining chocolates =11−5=6
Tom will take 5 more chocolates and pack the second box.
Now, the number of remaining chocolates =6−5=1
He has only one chocolate left. He can't make one more box with this chocolate.
Thus, for 11 chocolates, he could make only 2 boxes with 5 chocolates in each box.