Pretty sure the antecedent is B. twins.
The correct answer among the choices provided is option A. A group of related words containing a subject and predicate is a clause. It is classified into two kinds namely the independent and dependent clauses. Independent clause can stand alone while the dependent clause can not.
Answer:
Over the course of the narrative, Pepys works to root out corruption in the navy, commits some of his own corruption, and is an eyewitness to major historical events of the time. These include the Great Plague of 1665 and the Great Fire of London in 1666, two events where he helps keep order.
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