What year did triathlon and taekwondo make their Olympic debut?

Triathlon and taekwondo both made their Olympic debut at the 2000 Sydney Summer Olympics. This was a significant moment as it marked the inclusion of these sports in the Olympic program, expanding the diversity of competitions showcased during the games.

Triathlon combines swimming, cycling, and running in a single event, appealing to a wide range of athletes and spectators. Taekwondo is a traditional martial art from Korea, noted for its emphasis on high, fast kicks and dynamic fighting techniques. The inclusion of both sports in Sydney highlighted the International Olympic Committee's commitment to recognizing and promoting a broader spectrum of athletic disciplines.

The other options represent years in which other sports made their debut or were notably featured in the Olympics, but they do not pertain to the inaugural appearances of triathlon and taekwondo, which specifically occurred in Sydney 2000.