OPT: (I) pupal. (II) larval. (III) adult. (IV) embryonic.
Given those answer options, answer the question: Answer the following question given this paragraph: Like all chordates, vertebrates are animals with four defining traits, at least during the embryonic stage. The four traits are:. Q: Like all chordates, vertebrates are animals with four defining traits, at least during which stage? A:
A:
(IV)