Which of the following is classified as a personal quality?

Gender is classified as a personal quality because it represents an intrinsic characteristic of an individual that often influences their identity and social interactions. Personal qualities are traits or attributes that define a person and can shape their experiences and perspectives. Gender, as a personal quality, can affect how people perceive themselves and how they are perceived by others in various contexts, including the workplace.

On the other hand, job function or level refers to a professional status or role within an organization, which is more related to one's career rather than an individual trait. Income is a financial measure of an individual's earnings and does not reflect a person's inherent qualities or traits. Parental status indicates someone's responsibility as a parent or guardian, but it is more related to their life circumstances rather than a personal characteristic. Therefore, among the options given, gender stands out as a definitive personal quality.