Chanhudaro was an important Harappan centre known especially for —

Chanhudaro was an important craft-production centre, especially noted for bead-making, shell work and other small industries. It lacked the large citadel usually seen at major Harappan cities and was not the site of the Great Bath or a dockyard. The source tradition places the person, work and event in a defined historical setting. Bead-making and craft production fits that evidence because it matches the specific chronology, agency and function contained in the question. A comparison with the alternatives is useful: A dockyard, The Great Bath and Large stone reservoirs are genuine historical terms or names, but each belongs to a different office, patron, text, region or sequence. Reading the question as a relationship among person, period, place and institutional purpose prevents that mistake. The compact memory link is therefore Bead-making and craft production together with the factual context above, not the isolated option letter.