is c I think, I'm not sure tho!
If I am correct I believe this is secondary succession
Secondary succession is the series of community changes which take place on a previously colonized, but disturbed or damaged habitat. Examples include areas which have been cleared of existing vegetation (such as after tree-felling in a woodland) and destructive events such as fires.
Well, I cannot see your list of suggestions but I am assuming one of them would be muscles.
Muscles use a lot of energy and require a large number of mitochondria.
A patient will be at increased risk of postpartum bleeding or hemorrhage if the baby she gives birth to is very big. The time spent in labour is also important. If the woman labor for a long time before giving birth, she may have increased risk of postpartum bleeding.
The nuclear membrane is selective in what it allows to enter or exit the nucleus of the cell. This is because of the sensitive genetic material inside the nucleus. DNA never leaves the nucleus, but mRNA does RNA is sent to the ribosome to be translated into protein.