Final answer:
The phrase 'worthy successor' suggests that Arthur possesses similar qualities as his father, King Uther.
Step-by-step explanation:
The phrase 'worthy successor' suggests that Arthur has similar qualities to his father. This implies that he possesses the same admirable traits and qualities that made his father a good king. While option C is the correct answer, it is important to note that the phrase does not guarantee that Arthur will be more successful than his father or a better leader. It simply implies that he shares similar characteristics with his father.
Learn more about King Arthur's qualities and succession