a) What four points you should keep in mind while planning menu for 15-year-old boy? 

a) Four points to be kept in mind while planning menu for 15- year-old boy-

1. Menu should be nutritious 

2. Easy to eat 

3. Avoid over eating and dieting 

4. Food should provide satiety

b) Two ways of preparing a low-cost meal- 

1. Prefer using seasonal fruits and vegetables 

2. Substitute expensive food with low-cost nutritious food-For example use peanuts instead almonds 

3. Use locally available food products