What dietary law does not allow the consumption of shellfish?

The dietary law that does not allow the consumption of shellfish is rooted in the principles of Kashrut, which is the set of Jewish dietary laws. According to these guidelines, certain animals are considered kosher, while others are not. Specifically, shellfish are classified as non-kosher because they do not have both fins and scales, which are requirements for a fish to be deemed kosher. This prohibition reflects broader cultural and religious beliefs regarding food purity and health within Judaism.

The other choices refer to different dietary practices. Halal dietary laws, followed by Muslims, also prohibit certain foods, but their restrictions do not specifically call out shellfish in the same way, as it primarily centers around the manner of slaughter and other specific food categories. Vegetarianism is a dietary choice that abstains from all meat, but it does not inherently apply to shellfish as a specific prohibition. Gluten-free diets are designed for individuals with gluten sensitivities or celiac disease and focus solely on the exclusion of gluten-containing grains, having no specific relevance to shellfish consumption. Therefore, Kashrut is the correct framework regarding the avoidance of shellfish, making the choice associated with Kosher law the most accurate in this context.