Which of the following can be reproduced without seeking copyright permission?

The option stating "excerpts to few" is correct as it refers to the concept of "fair use" within copyright law. Fair use allows individuals to use a limited amount of copyrighted material without obtaining permission, particularly for purposes such as criticism, comment, news reporting, teaching, scholarship, or research.

In this context, using small excerpts from books, articles, or other works typically falls under fair use, provided the use meets the appropriate criteria. Factors such as the length of the excerpt, the purpose of the use, and the impact on the market for the original work contribute to whether the use is deemed fair. Therefore, reproducing a few excerpts is permissible as it often does not infringe on the rights of the copyright holder, particularly when it is for educational or analytical purposes.

In contrast, full books, works of art, and personal letters usually require obtaining copyright permission before reproduction. Full books are protected in their entirety, while works of art often come with strict copyrights protecting the creator's exclusive rights. Personal letters, although not typically protected in a conventional sense, can contain sensitive or private information that may also require consent for reproduction, depending on the situation.