The speed of the Belinda is 0.1 miles/minute.
The correct option is B.
Given
Belinda walks 2 miles to the store and it takes her 20 minutes.
The speed is defined as the ratio of distance covered and time.
The following formula is used to calculate speed;
[tex]\rm Speed = \dfrac{Distance}{Tiame}[/tex]
Substitute all the values in the formula;
[tex]\rm Speed = \dfrac{Distance}{Tiame}\\\\\rm Speed = \dfrac{2}{20}\\\\\rm Speed = 0.1\ \text{miles per minute}[/tex]
Hence, the speed of the Belinda is 0.11 miles/minute.
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