Which of the following supreme court justices served as the chief justice of the court? a. justice steven breyer b. justice antonin scalia c. justice john roberts d. justice sonya sotomayor

Answer is: C. Justice John Roberts.
John Roberts, born in 1955 is the 17th and current Chief Justice of the United States. He was appointed Chief Justice of the Court in 2005, he was nominated by President George W. Bush. John Roberts was the first Supreme Court nominee since Stephen Breyer