Washing your hands is the best way to prevent against diseases that are spread
a. by vectors.
b. by coughing and sneezing.
c. through the exchange of body fluids.
d. through contaminated water.

Graph A

Explanation:

we need to find the slope using the slope formula y2-y1/x2-x1

Graph A:3-0/4-0

               3/4

Graph B: 4-0/4-0

                   1

Graph C: 5-0/4-0

              5/4

Graph D 8-0/4-0

                 2

These slopes are the cost per pound of apple and graph A has the smallest slope

hopes. This helps please mark brainliest