Science Literacy Use the Following Graph from the Farming Systems

Multiple Choice

Science Literacy Use the following graph from the Farming Systems Trial (FST) research study conducted by the Rodale Institute to answer the following questions.
-In this study,the FST compared traditional tillage (turning and breaking up the soil) with no-till treatments on different plots to examine the effect on crop growth.What would be the dependent variable in this experiment?

A) the traditional tilling method
B) the no-till method
C) the crop yield
D) the type of crop used