Which of the following reflects a common characteristic of normal goods?

Normal goods are defined by a positive relationship between demand and income; as income increases, the demand for normal goods tends to rise, and conversely, when income decreases, the demand for these goods generally falls. This behavior reflects consumer preferences, where individuals are more likely to purchase more of these goods when they have greater financial resources.

The correct answer captures the essence of this relationship, illustrating that as income decreases, consumers will seek to purchase less of these goods due to their financial constraints. For normal goods, the decrease in income directly leads to a decrease in demand, highlighting a key characteristic of their economic behavior.

In contrast, other options reflect scenarios not associated with normal goods. For instance, an increase in demand in response to a decrease in income is more characteristic of inferior goods, which are viewed as lower-quality substitutes when consumers face budget constraints. Static demand regardless of income typically suggests goods that do not vary in consumption based on income levels, and goods that have an inverse relationship with price changes fall into different classifications based on price elasticity rather than income changes.