Respuesta :
The answer is A, for she must already dance at a fixed duration of 45 minutes-- the only way to increase her heart rate at a fixed duration is to dance faster.
Crystal is trying to get in shape for softball season, so she takes a hip hop dance class at the gym for 45 minutes three days a week , she do to get her heart rate into the target zone is Dance at a faster pace.
Wat is target heart rate?
In order to have an effective workout, Most of health experts recommend that we target our average heart rate from 55 % to 85% of our maximum heart rate for at least 20 - 30 minutes.
So. the food passes through the small intestine no nutrients will be inside the body.
To learn more about heart rate click here:
https://brainly.com/question/1155838
#SPJ2