Step 1: Understanding the context.
In ancient India, groups of artisans, craftsmen, and traders often formed organisations to regulate their activities, maintain quality, and protect mutual interests. These were collective associations.
Step 2: Analyze each option.
- (A) Guilds (Shrenis): These were formal organisations of craft producers and merchants. They controlled production, fixed rules, and protected members.
- (B) Sarthavahas: This term referred to leaders of merchant caravans, not organisations of artisans as a whole.
- (C) Setthis: Refers to wealthy bankers or moneylenders, not craft organisations.
- (D) None of these: Incorrect because the correct term is “Guilds.”
Step 3: Conclusion.
The correct term for organisations of craft producers and merchants was “Guilds” (Shrenis).
\[
\boxed{\text{Correct Answer: Guilds}}
\]