The layer that encloses and protects the heart is
Pericardium
Answer:
You click the crown near their answer if it is right. If it's right, though! Example, do it to me and I'll be getting another Brainliest plus for extra I'll be your friend and I forgot whatelse i was gonna say but this is the best i could think of. have a nice day, ...
:)
<span>The answer to this question is B embryo.</span>