A student in an agriculture class is comparing how different field-management practices affect soil organic carbon (SOC), a measure often used to track long-term soil health. The student consults the graph (in which the compost-amended field is labeled "Conventional till + compost" in the legend) and observes that in 2021, the average SOC in the no-till with cover crop field ______
Which choice most effectively uses data from the graph to complete the statement?