B would be the correct answer
They can conclude that Jose has better muscular endurance than Marcel
Muscular endurance refer to our muscle capabilities to sustain repeated effort of contraction over period of time
By doing more repetition than Marcel, Jose proved to have more muscular endurance than Marcel
Finding out if an exercise is safe needs to determine the fitness level of the exercise and how much it takes to achieve the result of the exercise. The person performing the exercise needs to know their endurance level and if they are able to perform the exercise without injury or illness.
I think you should review each lesson on those sports.