The correct option is (c) metanephric
Stages of kidney development:
- Pronephros is the earliest nephric stage in humans and constitutes the mature kidney in most primitive vertebrates.
- Mesonephros develops by the formation of mesonephric tubules from the intermediate mesoderm, it is the principal excretory organ during early embryonic life (4-8 weeks). It gradually degenerates, although parts of its duct system become associated with the male reproductive organs.
- Metanephros arises caudal to the mesonephros at five weeks of development; it is the permanent and functional kidney in higher vertebrates. It is derived from the intermediate mesoderm. The ureteric bud arises as a diverticulum from the Wollfian duct, close to the entrance to the cloaca and grows towards and inside the metanephric mesenchyme.
