Which is correct increasing order of their tendency of the given elements to form $M^{3-}$ ion?

The correct option is D $Bi<Sb<As<P<N$
$Bi<Sb<As<P<N$ This is the nitrogen family.

$N$ have highest electronegativity due to which it is having high tendency of forming $M^{3-}$. As we move down electronegativity decreases thereby introducing new $e^{-}$ is less feasible.