Explanation

D is correct because Ketanji Brown Jackson was sworn in as the first Black woman to serve on the US Supreme Court. A is incorrect because Amy Coney Barrett is not the first Black woman to serve on the US Supreme Court. B is incorrect because Leondra Kruger is not the first Black woman to serve on the US Supreme Court. C is incorrect because Kamala Harris has not been sworn in as a Justice of the US Supreme Court.