Use the Following Study to Answer the Following Question(s): a Researcher

Multiple Choice

Use the following study to answer the following question(s) : A researcher applies varying amounts of fertilizer (0, 2, 4, 8, 10 units) to 50 potted tomato plants.All other variables that may affect the outcome (watering, temperature, sunlight, plant size, etc.) are kept the same from pot to pot.At the end of the growing season, the tomatoes grown on each plant are weighed to determine which fertilizer level produced the largest tomato yield.
-Which variable is the independent variable?

A) The temperature
B) The tomato yield at the end of the growing season
C) The fertilizer amount
D) The plant size at the end of the growing season