उत्तर : 1. "Masazo Nonaka"
व्याख्या :

Answer: A) Masazo Nonaka Explanation: According to Guiness World Records, the world's oldest living man Masazo Nonaka has turned 113 years on 25 July of 2018 in Japan's Hokkaido.     Francisco Nunez Olivera was the former oldest person who died on 29th of January 2018 at the age of 112 years.   Les Colley (1898 - 1998, Australia), is the oldest ever man to father a child. He had his ninth child a son named Oswald to his third wife at the age of 92 years 10 months.