What is the general function of the prefix "Trans-"?

The prefix "Trans-" originates from Latin, meaning "across," "beyond," or "through." It is commonly used to indicate movement from one side to another or a change of state. For example, in words like "transport," it conveys the idea of carrying something from one place to another, while "transfer" suggests moving something across space or from one person to another.

This function of denoting movement or passage across boundaries is consistently recognized in various contexts, making "across" the most accurate choice in this scenario. The other options refer to different spatial or qualitative concepts but do not capture the primary meaning of the prefix "Trans-."