The appropriate trend line for the scatter plot described is:
- A scatterplot with several points plotted in a general downward trend from left to right in an approximately straight path. A decreasing line is drawn through the approximate center of the data points, with about half of the points below the line and half of the points above the line.
This trend line represents the overall trend of the data points in a fair and balanced way. The other two trend lines described do not accurately reflect the general downward trend of the data points.