The Ultimate Quiz: IAAF World Championships

The explanation for the given answer is that only one event was performed in the 1976 Athletics World Championships. This implies that there was only a single competition or race that took place during that particular championship.

Finland hosted the competition for the first time in 1976.

In the 1983 edition of the competition, 1300 athletes participated.

In the 1995 World Championship, the women's 3000 m event was replaced by the 5000 m event.

In the 1983 edition of the competition, 154 countries participated.

In 1987, two events were added to the competition.

The correct answer is 2017 edition. This means that the 2017 edition of the competition was the first to feature the 50km walk event.

In the 1999 Athletics World Championship, two events were added.

In the 1976 edition of the competition, it was estimated that there were 1900 athletes participating.

The correct answer is Triple jump. In the 1993 edition of the competition, the sports event that was added was the triple jump. This event involves athletes jumping and landing on one foot after making three consecutive jumps. It requires a combination of speed, power, and technique.