I would say a because he ran too much but that would be just me I think he hurt his knee from running too much more exercise but probably just aggravate his condition I could be wrong but this is what I think
Answer:
Hives
Explamation:Hives are usually caused by an allergic reaction to something that you have encountered or swallowed. When you have an allergic reaction, your body begins to release histamines into your blood. Histamines are chemicals your body produces in an attempt to defend itself against infection and other outside intruders.
His potential college dean would tell him to put some time aside to study but also take time to enjoy life.
Cancer cells the branch of medicine concerned with the studying and treatment of tumor.
