Answer:
Intraspecific interactions, where they are the same species, or interspecific interactions, where they are from different species.
Endocytosis carry substances into the cells, and exocytosis is what the cell rejects.
The answer is A. it belongs to a different family.
It can't be B because all the plants have different species.
It can't be C because not all plants listed are cherry trees.
Hope this helps :)
