Final answer:
The directional prefixes con-, com-, and col- are used to indicate movement or action together.
Step-by-step explanation:
The directional prefixes con-, com-, and col- are used to indicate movement or action together. These prefixes can be added to words to show that multiple things are happening at the same time or in coordination with each other. For example, consider the words conjoin, commingle, and collaborate. In all these words, the prefixes con-, com-, and col- imply a sense of togetherness or cooperation.