Answer:
Your question is poorly written, but as far as what was read the best thing would be a longitudinal study since you could see the evolution over time of the twins.
Explanation:
Longitudinal studies, unlike cross-sectional studies, are studies that analyze a factor in a population over time, thus analyzing the possible variables that occurred in those years, months or days. In simple words, the evolution over time is what a longitudinal study is based on (On the other hand, not a transversal one, since it would investigate a specific problem at a specific moment in time)
Answer:
all of the above is answer of this question
Answer:
They could eat healthier, like replacing junk food with healthier options, and exercise more by maybe going for walks instead of sitting around watching TV
