Questions: Leah, age 8, is teased at school for being overweight and she's self-conscious about her body image. How can Leah's parents best support her in losing weight? Packing her lunch, so she does not eat unhealthy school lunches. Joining her on a calorie-restrictive diet plan. Purchasing cute "goal" clothing she can fit into if she loses weight to incentivize weight loss. Encouraging physical play and joining her in increasing physical activity.

The answer is: Encouraging physical play and joining her in increasing physical activity.

Explanation for each option:

1. Packing her lunch, so she does not eat unhealthy school lunches.
   While providing healthy meals is important, focusing solely on controlling her diet without addressing other aspects of her lifestyle may not be the most effective or supportive approach. It is also important to teach Leah about making healthy food choices rather than just controlling her meals.

2. Joining her on a calorie-restrictive diet plan.
   Calorie-restrictive diets can be harmful, especially for children, as they need adequate nutrition for growth and development. Instead of focusing on calorie restriction, it's better to promote a balanced diet and healthy eating habits.

3. Purchasing cute "goal" clothing she can fit into if she loses weight to incentivize weight loss.
   This approach can be damaging to Leah's self-esteem and body image. It may also create an unhealthy focus on appearance rather than health and well-being.

4. Encouraging physical play and joining her in increasing physical activity.
   This is the best option as it promotes a healthy lifestyle in a positive and supportive way. Physical activity is crucial for children's health and can help Leah feel more confident and less self-conscious. Additionally, involving the family in physical activities can make it a fun and bonding experience, rather than a chore.