Angela runs 30 minutes everyday, but her 5k race time is staying the same and she is not having fun anymore. What should she do to improve? A. Run a 5k everyday because practice makes perfect B. Add diversity to her exercise program to keep her from getting bored or lazy C. Continue focusing all of her time on running but she should try to run faster each time she runs D. Continue focusing all of her time on running but she should try to run farther each time