Which of the following formats is NOT commonly used for resumes?

The abstract format is not typically associated with resumes. Resumes generally serve the purpose of briefly summarizing an individual's professional experience, skills, and qualifications in a structured manner that allows potential employers to quickly assess candidacy. Common formats such as chronological, functional, and combination focus on providing clear information about a candidate’s work history, skills, and education.

In contrast, an abstract format implies a more generalized, potentially unstructured outline of content, lacking the specific organization and details that are essential in a resume. Resumes rely on formats that highlight relevant experience and skills in a way that is directly applicable to job applications. The other formats mentioned facilitate this clarity and organization, highlighting either the timeline of work experience, skills, or a mix of both, which makes them suitable for professional contexts.