Answer:
Option A, to make over/restart
Step-by-step explanation:
We can derive its the word's meaning by examining its main roots in the prefix "re-" and the root "gen-."
Starting with the prefix, "re-" comes from the Latin meaning "again or anew," so if this prefix is present, it likely means whatever the verb is will be performed once more.
The root phrase "gen-" comes from the Greek root -genes which essentially means "produce(s)."
Put the two together, the result is a word that is involved in "producing again." The best definition to fit this would be a restart or a make over.