Final answer:
An increase in the number of two-income households is related to the sociocultural category in the analysis of external business environment, affecting consumer behavior and contributing to income inequality.
Step-by-step explanation:
An increase in numbers of two-income households in a society pertains to the sociocultural category in the analysis of the external business environment. Sociocultural factors refer to the social and cultural aspects of the environment that affect the operation of businesses. They include family structures, social norms, and trends, such as the rise of dual-income households. This shift in family structure contributes to changes in consumer behavior, as two-income households typically have more purchasing power and different spending patterns compared to single-income households. Such trends have a significant impact on businesses in terms of marketing strategies, product offerings, and service demands.
The transformation in family dynamics, like the increase in married women participating in the labor force and the prevalence of high-earning couples pairing up, has been instrumental in changing household income distributions. This has led to more households with higher disposable incomes. However, it also contributes to the complex issue of income inequality, as the gap widens between different segments of society.