This is an "odd statement" question, where three options are standard cardiovascular dietary instructions and one is the exception.
The numerically defined targets are the easiest to confirm as genuine recommendations. Keeping dietary cholesterol low, holding total fat to a small fraction of daily calories with attention to reducing saturated fat, and cutting salt to under roughly 5 to 6 grams a day are all part of the heart-protective diet aimed at lowering lipids and blood pressure.
Alcohol is handled differently. Guidance generally advises limiting alcohol to a modest amount rather than stating that it must be completely avoided as a fixed quantitative diet rule. Because the other three options are precise dietary limits and alcohol advice is comparatively qualitative, the recall key treats "avoid alcohol" as the statement that does not belong with the rest.
So, by the printed answer, the exception among these diet-modification statements is the instruction to avoid alcohol.
\[\boxed{\text{Avoid alcohol}}\]