Marissa is target heart rate zone is 140 to 178. during a tennis match she checks her wrist monitor which indicates that her heart rate is currently at 130. which of the following will her get the most productive work out based on the information she has gathered

There are no answers so this is my best she should work harder

Honestly, she might not be able to get her heart rate to 140-178. Depending on how fit a person is their heart beats slower or faster. If you have a very athletic person then their heart will beat slower because their heart is stronger and doesn't have to work as hard to carry blood to the rest of the body. However, she could very well try running rather than playing tennis given cardio is one of the most heart racing actions.

Yes they should do if insurance denys claim they have a back up to prove why procedure was medically necessary