Final answer:
Robert Walton breaks his oath to Victor Frankenstein by failing to carry out his request. The monster is unlikely to have survived.
Step-by-step explanation:
In his final meeting with the monster, Robert Walton does appear to break his oath to Victor Frankenstein. Victor asks Walton to continue pursuing the monster and seek revenge on his behalf. Although Walton fails to carry out this request, it does not ultimately matter because the monster is already dead by the time Walton returns to the ship. Therefore, it is unlikely that the monster could have survived.
Learn more about Robert Walton's betrayal and the fate of the monster