Which of the following is a key demographic factor?

Age is considered a key demographic factor because it is a fundamental characteristic that significantly influences social behavior, cultural experiences, and identity. Demographics refer to statistical data relating to the population and particular groups within it, focusing on aspects such as age, gender, race, ethnicity, and socioeconomic status.

Age specifically plays a crucial role in various sociological studies, impacting everything from voting behavior to consumer habits and social relationships. For example, different age groups may have different values, beliefs, and priorities, which can affect trends in markets, politics, and education. Understanding age as a demographic factor helps researchers and policymakers analyze and predict social phenomena effectively.

In contrast, email usage, language proficiency, and hobbies, while they can provide valuable insights about individuals or groups, do not serve as foundational demographic categories. Instead, these factors are more associated with individual preferences and skills rather than broader population characteristics.