Answer :
Final answer:
In 'How Arthur was chosen king', Arthur finding out that Sir Ector is not his father is used to develop a theme about family lineage.
Explanation:
Arthur finds out that Sir Ector is not his father is an event used in 'How Arthur was chosen king' to develop a theme about family that differs from themes in 'How Theseus Lifted the Stone'. This event highlights the theme of family lineage and the impact of discovering one's true heritage.
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