Ahealth club wants to survey its members about new services to offer. which of the following groups would provide the best representative sample?
women in a yoga class
parents at the club's daycare
every 5th member entering the club
members of two weightlifting classes

A health club wants to survey its members about new services to offer. by the following groups, the best group would provide representative sample are: c. every 5th member entering the club.

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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)