# Human population growth curve is a

$\begin{array}{1 1}(a)\;\text{S-shaped curve} \\ (b)\;\text{Parabolic curve} \\(c)\;\text{J-shaped curve} \\(d)\;\text{Zig-Zag curve}\end{array}$

Till now,human population hasn't reached the carrying capacity.
Hence (a) is the correct answer.