That would be D. Isovolumic contraction
As the name states during ISOvolumic contraction the volume of the ventricles doesn’t change and stays the same so no blood enters or leaves the ventricles. The thing that changes is the pressure of the ventricles that increases.
I can explain the process more if u want in the comments:)
I'm gonna go and say it's parenchyma but I'm not 100% sure
A two volume version of his "theory of rain"
I would say, because not all the time does a mutation organism live to reproduce.