What is the diameter of a golf ball?

The correct answer reflects the standard size of a golf ball, which is specified by regulations set forth by organizations such as the United States Golf Association (USGA). According to these regulations, a golf ball must have a diameter of no less than 4.27 cm (approximately 1.68 inches). The choice of 4.30 cm is accurate as it aligns closely with the minimum size requirement and is commonly rounded for ease of reference in casual contexts.

Understanding the dimensions of a golf ball is important, as these specifications impact how the ball performs in terms of aerodynamics, distance, and playability. The other options either fall below or above the regulatory size, which could lead to differences in performance and is why they are not correct.