It's B but let me know if it's wrong
Some organisms that share a common ancestor have features that have different functions, but similar structures. these are known as homologous structures.
<span>Homologous structures are organs or skeletal elements of animals which are connected via a common ancestor. These structures do not have to look exactly the same or have the same function, but they are structurally similar. The example of homologous structures is the forelimbs of vertebrates. In this example, we see that the wings of bats, the arms of primates, the front flippers of whales and the forelegs of dogs and horses are all derived from the same ancestral tetrapod structure.</span>
That is true and cacti with many spines are typically preferred by parasites. This is an example of bidirectional selection in which evolutionary pressures from multiple sources encourage an organism to adapt.
It's called reproductive isolation or divergence evolution
B. Cytoplasm- is made up of a jelly-like substance composed of mainly water and found between the cell membrane and nucleus. The cytoplasm makes up most of the body cells which hold organelles as well.