The only question you should ask a personal trainer is whether or not they are certified.
a. true
b. false

False. While certification(s) is very important to check, it’s not the only question you should ask. Other areas you should question are whether they have experience helping other clients to work towards the goal you are working towards, whether you can talk to any former or current clients to get a first-hand opinion and what their training style or ‘personality’ is like. This will give you a more well-rounded picture of the trainer.

The person who utilize the progression principle will keep adding the difficulty of the exercise that he's doing, while the person who does not, will only stay stagnant.  the person that utilize progression principle, will get a stronger endurance because now his body is conditioned to do harsher routines.{the answer was already on verified)

False is the correct answer