Annual Measurements of the Number of Powerboat Registrations (In Thousands)

Multiple Choice

Annual measurements of the number of powerboat registrations (in thousands) and the number of manatees killed by powerboats in Florida were collected over the 14 years 1977-1990. A scatterplot of the data, least squares regression line, and correlation coefficient follow.
-The y-intercept is not a valid prediction of manatee deaths. Why?

A) It is an example of extrapolation.
B) We cannot observe a negative number of manatee deaths.
C) Both A and B
D) Neither A nor B