A rectangle with dimensions 2 cm and 2.5 cm is the correct answer.
Similar means the ratio of a shapes sides are the same as the ratio of another shapes sides.
The ratio of the sides of the first rectangle is 50:40 or 5:4
The ratio of a rectangle with side lengths 2 cm and 2.5 cm would have the same ratio 5:4.
So, B) is the answer!
