Answer:
Uni
Explanation:
Prefixes are one or more letters placed at the beginning of a root word to add to its meaning; “uni”, for example, is a prefix meaning “one” and which can be found in words like “unicycle” (a cycle with one wheel), “uniform” (something that has one form, or that has the same form, manner, or degree), “unison” (something with one musical pitch) and “unicorn” (a mythological horse with one horn).
