Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to become a crossfit coach [title] Determine if you are eligible to attend a course. [step] Participants in the cf-l1 must be 17 years old and have no outstanding balances from other courses. You cannot have any violations of the crossfit code of conduct or have pending legal cases with crossfit.

Ending1: [title] Register for quarterly cf-l1 exams. [step] The cf-l1 exam occurs on the fifth day of term in the ncf school year. Ending2: They are deemed among the minimum following skills to live in the field, which allows them to become at least 18 years of age and another 35 years of age. You can be a normal citizen of upper management jobs, meet alimony, and use p22 for basic work or financial advantages. Ending3: [substeps] A crossfit-level 1 (cf-l1) certificate will give you an official title as a trainer for crossfit and will add to your credibility when looking for jobs in the future. Having this certificate also verifies you in the crossfit directory online. Ending4: [title] Seek entry into a crossfit school based on your verbal and writing degree. [step] This means that you will have to tutor a crossfit coach and train as a reverse recreational student through a crossfit-schooled degree to work in a crossfit academy.

Answer format: ending1/ending2/ending3/ending4