If P is the maternal uncle of Q, how is Q related to P's sister?ANiece/NephewBCousinCSonDCannnot be determinedAnswer: A. Niece/Nephew Read Explanation: Since P is the maternal uncle of Q, Q is the child of P’s sister.Therefore, Q is related to P’s sister as her son or daughter, and from the perspective of P, Q is the niece or nephew.So the expected answer is:Niece or Nephew\boxed{\text{Niece or Nephew}}Niece or Nephew Read more in App