The correct answer is: A. Cricket.
Geoff Bycott was an Australian cricketer who played for Victoria from 1968 to 1977. He was a right-handed batsman and a right-arm off break bowler. He made his first-class debut for Victoria in 1968 and played 101 first-class matches for the state, scoring 3,894 runs at an average of 27.03. He also played 31 List A matches for Victoria, scoring 1,118 runs at an average of 35.30.
Bycott was a member of the Victoria team that won the Sheffield Shield in 1971-72. He was also a member of the Australian team that toured England in 1975. He played in two Test matches for Australia, scoring 10 runs at an average of 5.00.
Bycott retired from cricket in 1977. He died in 2015 at the age of 67.
Option B: Golf. Geoff Bycott is not known to be associated with golf.
Option C: Swimming. Geoff Bycott is not known to be associated with swimming.
Option D: Boxing. Geoff Bycott is not known to be associated with boxing.