Your friend Amanda suffers from a condition that reduces her blood's ability to carry oxygen. Which of the following is the name of that condition?

Amanda might be suffering from a disease called Sickle Cell Anemia. It is an inherited red blood cell disorder. The red blood cells are distorted which result to its inability to carry oxygen throughout the body. The disease is not contagious.

While you didn't provide us with any choices - the answer is clear. When someone suffers from a lessened ability of blood to carry oxygen, this would mean that this person suffers from a condition we call anemia. Anemia is exactly this - a condition where the sufferer has a lessened ability to transport oxygen through his bloodstream.