Begin with the allowed format

Programs may specify a research paper, creative work, an excerpt, or another format. Brown's Literary Arts application requirements offer a clear example of a field-specific sample request. That request should not be generalized to a science or professional program.

Once the permitted format is clear, compare candidate samples against the task rather than trying to rank them in the abstract.

QuestionWhy it matters
Does it develop a clear argument or purpose?The reader can follow the thinking.
Are claims supported appropriately?The evidence and interpretation can be assessed.
Is the applicant's contribution clear?Collaborative work is not mistaken for solo work.
Does an excerpt stand on its own?The reader has enough context to understand it.

A fictional choice

An applicant has a highly graded introductory essay and a less polished research paper with a stronger argument. The research paper might be a better sample if revision is permitted and it demonstrates the requested skills. It might not be if the instructions require a different genre or an unedited piece.

The decision depends on the evidence the sample provides, not only its earlier grade.

An excerpt needs a doorway

If excerpts are allowed, a brief context note can identify the larger project and explain where the selection fits. It should not become a substitute for a readable sample or exceed the stated limits.

For coauthored work, follow the program's rules and describe the contribution accurately. An admissions reader should not have to guess which analysis or prose belongs to the applicant. The sample's value comes from what it lets the reader assess with confidence.