Answer:
A. Kelley uses 2 parts blue for every 3 parts yellow.
Step-by-step explanation:
Given equation that shows the amount of blue food coloring,
Where,
y = amount of yellow food coloring,
If y = 2,
i.e. parts of blue for every 2 parts yellow.
If y = 3,
i.e. 2 parts of blue for every 3 parts yellow.
If y = 5,
i.e. parts of blue for every 5 parts yellow.
Hence, OPTION A is correct.