(A) The correct developmental sequence is as follows:
$Sporogenous \text{ } tissue \rightarrow Pollen \text{ } mother \text{ } cell \rightarrow Microspore \text{ } tetrad \rightarrow Pollen \text{ } grain \rightarrow Male \text{ } gametes$
$1$. During the development of the microsporangium, each cell of the $sporogenous \text{ } tissue$ acts as a $pollen \text{ } mother \text{ } cell$ $(PMC)$.
$2$. Each $PMC$ undergoes meiosis (microsporogenesis) to form a $microspore \text{ } tetrad$, which consists of four haploid microspores.
$3$. As the anther matures and dehydrates, these microspores dissociate and develop into individual $pollen \text{ } grains$.
$4$. Finally, the $pollen \text{ } grain$ undergoes mitosis to produce $male \text{ } gametes$.