What is the purpose of gymnastics?

Gymnastics is a sport based on a succession of body movements that involve agility, elasticity, and strength, promoting physical health.
Gymnastics exercises can be performed for competitive, pedagogical, and/or therapeutic purposes.
There are four specific types of gymnastics: artistic, rhythmic, aerobic, and acrobatic.
a) Only statements I and II are true.
b) Only statements II and III are true.
c) Only statements I and III are true.
d) All statements are true.