Answer:
3
Explanation:
Angina pictures are medical terms related to the chest p[ain or coronary heart disease. It occurs when the heart muscle doesn't get much supply of blood as it needs. This happened because of the block of the arteries of the heart which is called ischemia attack. It occurs during physical activity and strong emotions. Severely narrowed arteries are allowed enough blood to the heart muscles when the demand for the oxygen is low like when do sitting. But when walking occurs, climbing on the hills leads to the much supply of the blood by the heart.
Symptoms: