The figure below shows the relationship between the percent of leaf litter mass remaining after decomposing for 3 years and the mean annual temperature, in degrees Celsius , in 18 forests in Canada. A line of best fit is also shown.

A particular forest in Canada, whose data is not included in the figure, had a mean annual temperature of . Based on the line of best fit, which of the following is closest to the predicted percent of leaf litter mass remaining in this particular forest after decomposing for 3 years?

The correct answer is: 82%

Step 1 of 2:
It is stated that a particular forest in Canada, whose data is not included in the figure, had a mean annual temperature of -2° C.
Observe the graph, there is one marking in the middle of 0° C and -5° C on the x-axis and that represents -2.5° C.
Step 2 of 2:
Now, if we move upward of that -2.5° C marking, we will find that circled data point in the figure. Intuitively, it can be determined that the point represents -2° C at above 80% of leaf litter mass remaining.
Therefore, looking at the given options 82% is the closest to the predicted percent.
Final Answer:
The right choice should be— D) 82%.