One way to show that a statement is not a good definition is to find a ___

Converse
Conditional
Biconditional
Counter Example *

Which shows a true conditional with a correctly identified hypothesis and conclusion
The First three months are free, so I must have joined a gym.
Hypothesis: The first three months are free
Conclusion: I have joined a gym

If you join the gym, then it is free for the first three months.
Hypothesis: It is free for the first three months.
Conclusion: You Join a gym

If you join the gym, the nit is free for the first three months.
Hypothesis: You Join the Gym.
Conclusion: It is free for the first three months ***

The first three months are free, so I must have joined a gym.
Hypothesis: I must have joined a gym
Conclusion: the first three months are free

I think it is B. I hope this helps I'm sorry if I got it wrong