Identifying risk factors for coronary heart disease Steps:

• Recall that coronary heart disease (CHD) results from narrowed arteries due to plaque buildup.
• Identify key risk factors: diets high in saturated fats raise cholesterol levels, promoting plaque.
• Note protective factors: low-salt diets reduce blood pressure, preventing hypertension-related risks; regular exercise strengthens heart health.
• Match options to determine which row correctly labels causes (yes for risks, no for protectives).

Why A is correct:

• It accurately identifies high saturated fat as a cause (increases LDL cholesterol per cardiovascular guidelines) while correctly excluding low salt and regular exercise as causes.

Why the others are wrong:

• B incorrectly labels high saturated fat as non-cause and low salt as cause.
• C wrongly marks regular exercise as a cause.
• D fails to recognize any causes, including high saturated fat.

Final answer: A