How did demand for sugar and coffee in European markets sustain slavery?

Correct answer: It gave plantations profitable production dependent on slave labour

European demand for sugar and coffee sustained slavery because it made plantation production highly profitable while depending on a large, controlled labour force. As consumers and merchants sought these commodities, plantation owners had a financial incentive to expand cultivation and obtain more enslaved workers. The resulting chain connected European consumption, colonial plantations, forced labour, shipping and commercial profit. Option B expresses this relationship accurately. Demand did not immediately free enslaved people; instead, within the existing colonial economy, it reinforced their exploitation. The National Convention and feudal dues are different political or social issues and do not explain the commercial mechanism. The governing idea is that market demand can encourage production systems, even when those systems rely on coercion and denial of human rights.