Final answer:
The sentence that best shows that King John wasn't eager to sign the Magna Carta is option B: 'Nobles would carry out the king's wishes.'
Step-by-step explanation:
The sentence that best shows that King John likely wasn't eager to sign the Magna Carta is option B: 'Nobles would carry out the king's wishes.' This sentence implies that the king didn't want to limit his own power and instead wanted the nobles to act according to his desires.
Learn more about King John's reluctance to sign the Magna Carta