Which of the Following is a Characteristic of All Chordates

Question

Which of the following is a characteristic of all chordates at some point during their life cycle?
A) jaws
B) post-anal tail
C) four-chambered heart
D) vertebrae

Accepted Answer

Chordates are defined by having a post-anal tail at some point during their life cycle, along with a notochord, a dorsal hollow nerve cord, and pharyngeal slits.