The samiti is commonly interpreted as a broader tribal or popular assembly, while sabha may have been a smaller council or gathering. The term ishan can denote a lord or presiding person in some contexts, but treating “Ishan” as the fixed constitutional president of every samiti is not sufficiently secure. Samiti fits that evidence because it matches the specific chronology, agency and function contained in the question. A comparison with the alternatives is useful: Ishan, Bhaga and Bali are genuine historical terms or names, but each belongs to a different office, patron, text, region or sequence. The common error is to select the most familiar option without checking whether it performs the role described in the stem. The supporting source also helps separate later textbook shorthand from the more precise historical formulation. The compact memory link is therefore Samiti together with the factual context above, not the isolated option letter.