Robert Hooke was the first scientist to discover cell. This discovery was made possible by the use of microscope which he invented. With this microscope, Robert examined a cork and noticed pores which filled the entire volume of the thin slices of cork; he called the pores cells. This discovery was made in January 1653.
I’d go with C hope it helps
the answer i think be a area a has more predators then area b because if it was disease or lack of food source they wouldn't that low i think
