Correct Option: D

Rodney George "Rod" Laver is an Australian former tennis player who holds the record for most singles titles won in the history of tennis, with 200 career
titles. He was ranked World No. 1 for seven consecutive years, from 1964 to 1970 and is the only tennis player, male or female to have twice won the Grand Slam (all four major singles titles in the same year) – first as an amateur in 1962 and second as a professional in 1969.