Answer: a. Proofreading
Step-by-step explanation:
Proofreading is an important part in the publication process. In this the carefully all the contents of the text are thoroughly read and errors are rectified and corrected like formatting issues, spelling mistakes, grammatical errors, inconsistencies, punctuation mistakes, and other mistakes are checked. Without proofreading no writing should be published.
According to the given situation, proofreading is the part of the revision process of the writing. This is done when the writing part is completed and the content is sent for electronic printing before electronic printing thorough revision of the content is required.