Correct Answer:
C. 539
The correct answer is 539. The 2020 Summer Paralympics, held in Tokyo, Japan, featured a record 539 medal events across 22 sports. This was an increase from the 2016 Rio Paralympics, which had 528 events. The higher number reflects the growing inclusivity and expansion of para‑sports, with more classifications and events for athletes with various disabilities.
Options 339 and 439 are significantly lower than the actual number, and "None" is incorrect because 539 is a valid count.