Question

1. the prefix in- means \in\ or \into.\ it changes to im- when it combines with the latin verb pellare (to drive) to form the english word (to drive forward).

Explanation:

The prefix "in - " (meaning "in" or "into") changes to "im - " before the Latin root "pellare" (to drive). Combining "im - " and "pellare" gives the English word "impel", which means "to drive forward".

Answer:

impel