What is indicated by the prefix "im-"?

The prefix "im-" is commonly used in the English language to denote negation or opposition, meaning "not." It is a variant of the prefix "in-," which also conveys a similar negating effect before certain letters. For instance, "impossible" means "not possible," clearly showcasing how "im-" transforms the meaning of the root word by negating it. This prefix can be pivotal in understanding words that convey contrary meanings, allowing for a greater comprehension of the nuanced language. Other options do not fit with the function of "im-" since they suggest entirely different meanings unrelated to negation.