Final answer:
The estimated annual number of basketballs purchased worldwide is difficult to determine precisely. However, based on the popularity of basketball and the number of countries where it is played, an estimated 100 million basketballs are purchased each year.
Step-by-step explanation:
The estimated annual number of basketballs purchased worldwide is difficult to determine precisely. However, we can make an educated estimation based on available data.
According to the International Basketball Federation (FIBA), basketball is one of the most popular sports globally. It is played in numerous countries, both professionally and recreationally. Considering the widespread popularity of basketball, it is reasonable to assume that a significant number of basketballs are purchased each year.
Given this information, choice C) 100 million seems like a reasonable estimate for the annual number of basketballs purchased worldwide. However, it's important to note that this estimate may vary depending on various factors such as population, interest in the sport, and global basketball events.