To effectively reduce sodium intake, which substitution would be best?

When aiming to reduce sodium intake, choosing unsalted margarine over regular margarine is a sound decision because traditional margarine often contains added salt for flavor. By opting for unsalted margarine, individuals can significantly reduce their sodium consumption while still enjoying the spreadable qualities and texture of margarine in their diet. This substitution directly tackles the goal of lowering sodium levels without compromising the overall dietary experience.

Other substitutions, such as carrots for celery or carrots for pepper, do not directly address sodium intake since these vegetables themselves contain minimal sodium. Similarly, switching to diet margarine over regular margarine might reduce calories but does not specifically impact sodium levels, as the sodium content could remain the same or vary with no guarantee of reduction. Thus, selecting unsalted margarine is the most effective choice for those looking to cut back on sodium in their diet.