A group of hikers keep track of their elevation as a function, E, to determine the
different elevation levels as they travel along the trail in Possum Kingdom State
Park. E(d) represents the height of elevation in feet where d is the distance the
hiker travels along the trail. What would be the most appropriate domain for the
function?
{-1,-2,0,1,2,3)
O ,-1,0, 1, 2, 3, ...)
{0,1,2,3,4,...}
C-3,0,1,2,3...
)