A stroke occurs when the blood supply to part of the brain is interrupted or reduced, preventing brain tissue from getting oxygen and nutrients. Brain cells can begin to die in minutes.
<em><u>Signs and symptoms of stroke include:</u></em>
<u>Trouble speaking and understanding what others are saying</u>. You may experience confusion, slur your words or have difficulty understanding speech.
<u>Paralysis or numbness of the face, arm or leg</u>. You may develop sudden numbness, weakness or paralysis in your face, arm or leg. This often affects just one side of your body. Try to raise both your arms over your head at the same time. If one arm begins to fall, you may be having a stroke. Also, one side of your mouth may droop when you try to smile.
<u>Problems seeing in one or both eyes</u>. You may suddenly have blurred or blackened vision in one or both eyes, or you may see double.
<u>Headache</u>. A sudden, severe headache, which may be accompanied by vomiting, dizziness or altered consciousness, may indicate that you're having a stroke.
<u>Trouble walking</u>. You may stumble or lose your balance. You may also have sudden dizziness or a loss of coordination.
The answer is A because relating to or denoting exercise that improves or is intended to improve the efficiency of the body's cardiovascular in absorbing and transporting oxygen.
