The correct multiplication problem is represented by option b:
To find the multiplication problem represented by this model, we need to consider the fraction of shaded boxes in each row.
For the 1st row:
There are a total of 6 boxes in the 1st row.
5 are shaded green.
1 is yellow.
So, the fraction of shaded boxes in the 1st row is
(green boxes) and
(yellow box).
For the 2nd row:
There are a total of 6 boxes in the 2nd row.
5 are shaded blue.
1 is left blank.
So, the fraction of shaded boxes in the 2nd row is
(blue boxes) and
(blank box).
Now, we need to find the product of the fractions for each row, which corresponds to the multiplication problem:
This matches with option: b