Which expression equals the fraction of the square that is shaded dark blue?

When had this question, I literally guessed but got the question right.

Here is what I got;

1/2 x 2/3

answer: the 4 kilogram bag

step-by-step explanation: this is because if you divide the number of kilograms into the total it will tell you how much each individual kilogram would be worth. 2 kilos is 7 and change 3 would be around 6 ish and the 4 kilo would be 4.6 and change and the 5 kilos would be like 4.88