Question

write a short statement that expresses a possible function between the given variables. number of motorcycles on road, air quality

a. as the number of motorcycles on the road increases, the quality of the air generally deteriorates.
b. as the number of motorcycles on the road decreases, the quality of the air generally deteriorates.
c. as the quality of the air deteriorates, the number of motorcycles on the road increases.
d. as the quality of the air deteriorates, the number of motorcycles on the road decreases.

Explanation:

Motorcycles emit pollutants. More motorcycles mean more emissions, thus deteriorating air quality.

Answer:

A. As the number of motorcycles on the road increases, the quality of the air generally deteriorates.