The correct answer is C. Sir Don Bradman scored 6 double centuries in his test career.
A double century is a score of 200 or more runs in a single innings of a cricket match. It is a very rare feat, and only a handful of batsmen have ever achieved it. Sir Don Bradman is one of the most famous batsmen in the history of cricket, and he is also the only batsman to have scored 6 double centuries in his test career.
Bradman’s first double century came in 1929, when he scored 254 runs against England at Lord’s. He went on to score 5 more double centuries, including a record-breaking 334 runs against England at Headingley in 1930. Bradman’s double centuries helped Australia to win many test matches, and they are a testament to his incredible batting skills.
Option A is incorrect because Bradman did not score 10 double centuries in his test career. Option B is incorrect because Bradman did not score 9 double centuries in his test career. Option D is incorrect because Bradman did not score 12 double centuries in his test career.