The prefix "co" signifies which of the following?

The prefix "co" means "together" or "with." It is derived from the Latin con, which conveys the idea of partnership or collaboration. For instance, in words like "cooperate" and "coauthor," the prefix indicates that two or more people are working in conjunction with one another. This signifies a shared effort or combined action, aligning perfectly with the definition represented by the choice of "together." Understanding prefixes like "co" can help in deciphering the meanings of various words and enhancing vocabulary skills.