<span>Aneurysm.
An aneurysm occurs when part of an artery wall weakens, allowing it to widen abnormally or bulge out. The causes of aneurysms are sometimes unknown. Some may be congenital, meaning a person is born with them. An aneurysm may also occur as the result of aortic disease or an injury.</span>
They both increase in proportion to one another. Hope this Helps:)
That is called A. <span>Circular distribution.</span>
The answer for this would just be your opinion.
how confident are you in answering the question, if you are not confident than say you aren’t and try to explain it to the best of your ability.