Multi-choice problem: Continue writing the next sentence in this paragraph:

How to stay on track with healthy habits on the weekend
Devote some time to exercise.
One of the best habits you can form during the weekend is exercise. Strive for a good balance of cardiovascular exercise, weight training, and stretching.

Choose your answer from:
i. Ultimately, the weekend will allow you spare time to get exercise you don't normally get during the week. Set aside some time on saturday and sunday to exercise.;
ii. A good balance of physical activity will minimize any loss of muscle that may be experienced during the weekend. Physical activity will also help sustain your body weight.;
iii. Focus on doing cardio exercises that help stretch, strengthen, and tone your body. Working out will help you ensure you get regular physical activity throughout the week.;
iv. Set a timer for yourself and ask yourself how long you can do this activity in 30 minutes. This incremental amount of time will help ensure that you do not end up feeling bored and tired during the weekend.;
i.