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 (°C), 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 -2°C. 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?
A) 50%
B) 63%
C) 70%
D) 82%