revise the sentence to achieve parallel structure

A successful gymnast must have good coordination be agile and strength

a successful gymnast must be well coordinated agile and strong
a successful gymnast must have good coordination good agility and be strong
a successful gymnast must coordinated have agility and strength
a successful gymnast must have good coordination agiliy and be strong

A successful gymnast must have good coordination, be agile, and be strong.

A successful gymnast must have good coordination, be agile, and have strength.

To revise the sentence to achieve parallel structure, you can make the following changes:

"A successful gymnast must have good coordination, be agile, and have strength."

In this revised sentence, all the elements are parallel in structure with each other. The verb "have" is used consistently before each element (good coordination, be agile, and have strength), creating parallelism.