Which of the following is NOT a qualification for an embalmer?

The correct answer highlights that being over 21 years old is not a qualification for becoming an embalmer. In many states, specific age requirements may not be mandated for licensure as long as the individual meets other educational and practical training criteria.

To be considered qualified, prospective embalmers must usually have a combination of educational achievements, which could include the completion of a high school education or equivalent, along with substantial hands-on training through an apprenticeship and practical experience, such as embalming a certain number of bodies. These requirements focus specifically on the individual's ability to perform the technical work necessary for embalming rather than a specific age threshold.

Thus, while age may be a condition for some aspects of professional practice or participation in certain programs, it is not universally a requirement for licensure in the embalming profession, thereby making it the correct choice for this question.