The correct option is C Amphioxus
Amphioxus also called as lancelets or cephalochordates form one of the three chordate subphyla. Amphioxus possess typical chordate characters, such as a dorsal hollow neural tube and notochord, a ventral gut and a perforated pharynx with gill slits, segmented axial muscles and gonads, a post-anal tail, a pronephric kidney. Hence, option B is correct.