The answer is A, just took the test on edge
<span>The inability to recall which numbers on a telephone dial are not accompanied by letters</span>
In biology, the inner lining of tubular structures is called a lumen.
This can refer to numerous tubular structures in the body, such as the lumen of the veins and arteries, the lumen of the intestines or the tubes in the kidneys.
This term can also be used to describe a space defined by membranes of cell organelles such as the lumen of the mitochondria, the Golgi apparatus, and others.
Coach can first recognize heat stroke by increased in body temperature brought on by intense physical activity in hot weather. Exertional heat stroke is a medical emergency; the emergency medical service should be called for and while waiting for them, affected person should be moved into a cool place and all outer clothing materials should be removed from his body.