Which of the following is a consequence of increased demand when income remains unchanged?

When demand for a good or service increases while income remains unchanged, the primary consequence is higher prices. This situation can be explained through the principles of supply and demand in economics.

When demand increases—meaning consumers want to purchase more of a product at all price levels—the existing supply may not meet this new demand immediately. Because the supply of goods or services remains fixed in the short term, sellers can respond to the heightened demand by raising prices. As prices rise, it generally leads to a market adjustment where consumers may buy less at higher prices, and producers may be encouraged to supply more in the long run.

In the context of the other choices: an increase in demand does not directly lead to increased supply or more production immediately; rather, those outcomes would take time as producers react to price changes. Additionally, reducing income contradicts the scenario, as income is specified to remain unchanged. Thus, considering the dynamics of the market, higher prices accurately capture the consequence of increased demand given unchanged income.