Question

1. which two conditions are caused by blockage of a blood vessel?

hypertension and obesity
heart attack and stroke
arrhythmia and stroke
hypertension and high cholesterol

Explanation:

A heart attack occurs when a coronary artery (which supplies blood to the heart muscle) is blocked, preventing oxygen - rich blood from reaching the heart. A stroke happens when a blood vessel in the brain is blocked (ischemic stroke) or ruptures (hemorrhagic stroke, but the question is about blockage). Hypertension (high blood pressure) is often a risk factor for other conditions but is not directly caused by a single blood - vessel blockage. Obesity is a complex condition related to lifestyle, genetics, etc., not a direct result of blood - vessel blockage. Arrhythmia (abnormal heart rhythm) can have various causes like electrical conduction problems in the heart, not just blood - vessel blockage. High cholesterol can contribute to plaque formation (which can lead to blockages) but is not a condition caused by an immediate blockage.

Answer:

heart attack and stroke