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Which choice completes the text so that it conforms to the conventions of Standard English? In 1453, English King Henry VI became unfit to rule after falling gravely ill. As a result, Parliament appointed Richard, Third Duke of York, who had a strong claim to the English throne, to rule as Lord Protector. Upon recovering two years later, ______ forcing an angered Richard from the royal court and precipitating a series of battles later known as the Wars of the Roses.