The demand for Rembrandt paintings would increase if the stock market undergoes a boom.
A change in demand always determines a shift in consumer desire to purchase a particular good or service, without any effect of a variation in its price. The change could be because of a shift in income levels or the tastes of consumers, or when a different price is charged for a related product.
Change in demand occurs only when the appetite for goods and services shifts, even if the prices of the goods or services remain constant. When the economy gets flourished and incomes are risen, consumers can feasibly purchase more of everything.
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