Which scenario best illustrates the concept of inelastic demand?

Inelastic demand refers to a situation where the quantity demanded of a product does not change much even when the price changes. This often happens with essential goods that people need, such as medicine or basic food items. For example, if the price of insulin for diabetics rises, most diabetics will still buy it because they need it to stay healthy, showing that their demand is inelastic. In this scenario, even though the price has increased, the quantity demanded remains relatively stable, which helps businesses understand how to set their prices without losing customers. This concept is important because it shows how certain products can maintain steady sales regardless of price changes.