It is often used in words that relate to the act of making a choice, such as:
* Option: A choice or possibility.
* Optimal: The best or most favorable.
* Optimize: To make something as good or effective as possible.
* Optimist: Someone who is hopeful and positive.
* Optional: Not required, but available as a choice.
The root "opt" can also be found in words like "adoption," "election," and "selection," all of which imply a process of choosing or selecting.