Explanation:
so there blood can go in and out of there arteries and ventricles
<span>Actually baby Aiden will surely develop a strong secretory Iga antibodies which is passive immunity to most of the types of bacteria and viruses, ie, as a protection against infections, which inturn is a response to the baby to its immune system in the form active immunity.</span>
The answer is a because he can not get the correct order cause of the sun
I believe it is A
Please make this the brainliest answer