# Due to extinction of pollinator bee,a plant with obligate mutualism with this bee got extinct.This can be placed in which cause of extinction?

$\begin{array}{1 1}(a)\;\text{Overexploitation}\\(b)\;\text{Habitat loss}\\(c)\;\text{Alien species invasions}\\(d)\;\text{Co-extinction}\end{array}$

Due to extinction of pollinator bee,a plant with obligate mutualism with this bee got extinct.This can be placed in co-extinction.
Hence (d) is the correct answer.