Final answer:
The text provided does not contain information about the Monkey King and Lai-Tsao, but characters in ancient East Asian stories often make choices influenced by admiration and celestial events, suggesting options A or B might be possible if related to the text about the Monkey King.
Step-by-step explanation:
The Monkey King's choice to release himself and follow Lai-Tsao is not directly answered in the provided text. However, the themes in the texts suggest that figures in ancient East Asian stories often follow others out of admiration for their qualities like bravery or wisdom, or due to supernatural or celestial influence guiding their actions. For example, characters encountering supernatural beings or being chosen by Heaven may feel an obligation to undertake certain actions.
Decisions such as Emperor Kangxi's tour or the ending of Zheng He's voyages by Zhu Zanji also reflect strategic or celestial influences. Without a specific text about the Monkey King and Lai-Tsao, we cannot decisively choose an option between (A) impressed by bravery and kindness, (B) indebtedness for saving his life, (C) attracted to beauty and intelligence, or (D) seeking adventure.