Jsudjdjejwmkw
jdjjeemeiejejuejeieieke
Answer:
Questionnaires
Explanation:
They allow both government and outside researchers to obtain estimates of a variety of health related topic or issue among either the entire nation or specific demographic group of the population.
And the survey design is cross section.
What you need in your plate is
1. fruits
2. vegetables
3. protein
4. carbohydrates
5. water