Final answer:
An age cohort is a group of people who share a statistical or demographic trait. For example, people born in the same year would belong to the same age cohort. The correct option is D.
Step-by-step explanation:
Among the given options, the one that represents an example of an age cohort is "People born in the same year." An age cohort consists of individuals who are born within a specific time frame, often within the same year or range of years. Members of an age cohort tend to experience the same societal events at similar points in their lives, which can shape their attitudes, values, and behaviors. For example, all children born from approximately 1980-2000 can be classified as 'Millennials,' a term that identifies a demographic cohort.
Cross-sectional research is a method frequently used in Social Studies to compare different age cohorts at the same time. For instance, researchers might compare the dietary habits of different age groups instead of following a single group over many years. Age cohorts are significant in such research since they can reveal differences in social and cultural experiences that are not directly tied to age.
It's important to note that a cohort consists of individuals who share a demographic trait such as age, which differs from categories like gender, interests, or living in the same city. Moreover, the cohort concept is also related to various theories such as continuity theory, which postulates that the elderly strive to maintain consistency in various aspects of their lives.
The statement 'True or False. A cohort is a group of subjects of different ages, weights, genders, and health statuses.' is False. A cohort is not defined by such a mixture of characteristics but rather by a specific demographic or statistical trait, typically age.