Answer
$Vertical$,$0$
Work Step by Step
The natural logarithmic function f(x) = ln x has the _______ asymptote x = ____.
$Vertical$
The only asymptote is vertical as you can reach any point in the range. However in the domain you can not have a negative value meaning a vertical asympotote has to be placed.
$0$
Since e^{x} = 0 does not have a number that can satisfy the equation, the asymptote therefore has to be 0
