If somebody helps me with the right answer I will award 40 points

1. A

2. A

3. C

4. B

Step-by-step explanation:

Most likely (B)

Step-by-step explanation:

The area of a rectangle is it's length by width.

Answer A results in 20 square inches.  But, 10 is not one less than 2.

Answer B results in 20 square inches as well, and 4 is one less than 5.

Answer B has it's width one less than it's length.

The best answer is B.