The scatterplot below shows the relationship between the amount of sodium in a cereal and the cereal's Consumer Reports rating. Scatterplot showing cereal rating on y-axis and sodium on x-axis. Y-axis ranged from 0 to 100 in increments of 20. X-axis ranged from 0 to 350 in increments of 50. 0 sodium has about 7 dots clustered between 55 and 75 rating. 1 to 50 sodium has two dots at about 35. 50 to 100 sodium has dots at 30, 50, 65, and around 47. 100 to 150 sodium has many dots from about 28 to 50, and then one at 70 and one at 95. 150 to 200 has lots of dots clustered between 20 and 60 200 to 250 has lots of dots clustered between 18 and 55 250 to 300 has some dots clustered from about 25 to 60 300 to 350 has one dot at about 40 Question 4 / 5 What is the explanatory variable in the scatterplot above? Consumer Reports rating Cereal's sodium content