Answer:
B. Varying exercise types helps to improve the likelihood of maintaining a program successfully
Step-by-step explanation:
A. Progress is always steady = this is false, progress can occur at different rates at different times, depending on the activity, strengths, and fitness levels
B. Varying exercise types helps to improve the likelihood of maintaining a program successfully - this is true - keeping a training programme fresh and having lots of variety in the exercise types helps to reduce boredom
C. Exercising with a partner can be fun, but does not improve the likelihood of maintaining a fitness program - false, exercising with a partner can help both individuals be more motivated, keeps them accountable, and could be more fun.
D. Starting off an exercise program at a high level of intensity is advisable to improve the chances of success - this is false. this could cause injury and demotivation