Based on the graph below, what is the most likely explanation for what happened halfway through year 15?
A graph with Years on the x-axis from 14 to 16 and Rabbits on the y-axis from 0 to 400, by hundreds. The line begins above 400, drops to 350 at year 14, increases above 400 and drops to below 350 at year 15, increases to over 400 and drops to 200 at year 16.
a.
a hot summer
b.
a harsh winter
c.
a sharp increase in available land
d.
a sharp decrease in available land


ANsWER is D