This is one of the symptoms of Coronary artery disease

The correct option is Pain or discomfort in the chest, lower jaw or arms.

Explanation:
Coronary artery disease (CAD) occurs when the major blood vessels that supply the heart muscle with blood, oxygen, and nutrients (coronary arteries) become damaged or diseased, typically due to the buildup of cholesterol-containing plaques (atherosclerosis). This buildup restricts blood flow to the heart muscle.

When the heart muscle does not receive enough oxygen-rich blood, especially during physical exertion or stress, it causes a condition known as myocardial ischemia. This insufficient blood supply triggers a specific type of chest pain or discomfort called angina. Because the nerves serving the heart also travel near nerves supplying other parts of the upper body, this pain or discomfort can radiate or be referred to nearby areas, including the lower jaw, neck, back, shoulders, or down one or both arms (most commonly the left arm).

Therefore, pain or discomfort in the chest, lower jaw, or arms is a classic symptom of coronary artery disease. The other options, such as sleep problems, headache, and diarrhoea, are not typical diagnostic symptoms of coronary artery disease.