Pretend you are a teacher preparing a quiz for the text I will provide. 
            Each quiz question should follow the format below. 
            Ensure that you carefully recheck the questions and answers for accuracy. 
            The output should be a ready-to-use list of dictionaries for the Python eval function:

            [

                    "question": "WRITE THE QUESTION HERE",
                    "options": ["A) OPTION_1", "B) OPTION_2", "C) OPTION_3", "D) OPTION_4"],
                    "answer": INDEX_OF_CORRECT_ANSWER_IN_OPTIONS_LIST,
                    "explanation": "EXPLAIN WHY THE ANSWER IS CORRECT"

            ]

            Text:
            nt caused by the sudden interruption of 
oxygenated blood to the brain. This in turn results in 
focal necrosis of brain tissue and possibly death. Even if a 
stroke is not fatal, the survivor often is to some degree 
debilitated in motor function, speech, or mentation. 
Stroke 
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Stroke is caused by the interruption of blood supply and 
oxygen to the brain as a result of ischemia or 
hemorrhage.  
Etiology 
Ischemic stroke (most common type): induced by 
thrombosis or occlusion of a cerebral blood vessel by 
distant emboli. Its risk is increased by atherosclerosis and 
cardiac pathosis (myocardial infarction, atrial fibrillation). 
Hemorrhagic stroke: hypertension is the most important 
risk factor for intracerebral hemorrhagic stroke. 
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Etiology 
Additional factors that increase the risk for stroke include: 
1. The occurrence of transient 
ischemic attacks. 
2. Previous stroke. 
3. High dietary fat. 
4. Obesity and elevated blood 
lipid levels. 
5. Physical inactivity. 
6.  Uncontrolled hypertension. 
7.  Cardiac abnormalities. 
8.  Diabetes mellitus. 
9.  Heavy tobacco smoking. 
10. Increasing age. 
11. Periodontal disease. 
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Familiarity with the warning signs and symptoms and the phases of stroke can lead 
to appropriate action that may be lifesaving. 
Signs and symptoms 
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Signs and symptoms 
Four events associated with stroke are: 
A. Transient ischemic attack (TIA):  
This is a "mini" stroke that is caused by a 
temporary disturbance in blood supply to a 
localized area of the brain. A TIA often causes 
numbness of the face, arm, or leg on one side of 
the body, weakness, tingling, and speech 
disturbances that usually last less than 10 
minutes. 
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Signs and symptoms 
Four events associated with stroke are: 
B. Reversible ischemic neurologic deficit (RIND): 
Neurologic deficit recovers within 24 hours. 
C. Stroke-in-evolution: In which the deficit has 
been present for several hours and continues to 
worsen during a period of observation. 
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D. Completed stroke: Signs of a stroke include 
hemiplegia, temporary loss of speech, or trouble 
In speaking or understanding speech, temporary 
dimness or loss of vision, particularly in one eye 
(may be confused with migraine), unexplained 
dizziness, unsteadiness, or a sudden fall. 
Signs and symptoms 
Four events associated with stroke are: 
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Laboratory findings 
 
Laboratory tests often include urinalysis, blood 
sugar level, complete blood count, erythrocyte 
sedimentation rate, serologic tests for syphilis, 
blood 
cholesterol 
and 
lipid 
levels, 
chest 
radiographs, and electrocardiogram. 
Patients suspected of having had a stroke usually receive a variety of laboratory 
and diagnostic imaging tests to rule out conditions that can produce neurologic 
alterations, such as diabetes mellitus, uremia, abscess, tumor, acute alcoholism, 
drug poisoning, and extradural hemorrhage. 
Doppler blood 

            Quiz: