After the coelom developed, what process allowed for the evolution of the many types of protostomes?

Protostomes undergo spiral and determinate cleavage in the early embryonic stages, and the coelom is formed through the process of schizocoely.

The mouth first develops from the blastopore, which is the first developmental opening.

Clams, snails, slugs, octopuses, earthworms, and are protostome coelomates, meaning they are formed from head to foot (or mouth to foot).

Explanation:

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )