In which situation can product diversification strengthen an artisan's livelihood?

Correct answer: When demand for only one product starts falling

Direct answer: Option A, when demand for only one product starts falling. Product diversification means offering more than one kind of product, design or related item. Step by step: the artisan notices that sales of the single existing product are declining; the artisan uses existing skills to make another suitable product; different products may attract different buyers or seasons; income does not depend entirely on one item; livelihood risk can be reduced. Option A is correct because diversification can provide alternatives when one product has weak demand. Option B is wrong because removing all customers cannot strengthen a livelihood. Option C is wrong because diversification uses and extends skills rather than stopping their use. Option D is wrong because staying away from the market prevents the artisan from finding buyers. Diversification does not guarantee success: new products should suit customer needs, quality standards, costs and available skills. Memory cue: if one product slows, more suitable products can spread the risk.