Final answer:
The drawback of cross-sectional research is the inability to generalize findings to other people.
Step-by-step explanation:
The correct answer is cross-sectional.
Cross-sectional research is a type of observational study that collects data from a sample of subjects at a certain point in time. The drawback of this study type is the inability to generalize findings to other people because it only provides a snapshot of the population at that specific moment.
For example, if a researcher wants to study the dietary habits of different age groups, they would compare the habits of 20-year-old individuals, 30-year-old individuals, and 40-year-old individuals at the same time. However, this approach is limited by the differences that exist between generations, which are unrelated to age. These social and cultural differences can impact the results.