Which of the following is true about longitudinal research? a. data are useless b. changes in the operational definitions the agencies use to specify key terms does not change overtime c. the procedures the agency uses to collect the data over time remain the same d. as the time interval under investigation increases, so does the potential for change in measurement.

Option D -- As the time interval under investigation increases, so does the potential for change in measurement.

Explanation:

Since longitudinal research or study focuses on change in behavior over time. Therefore, as the time interval under investigation increases, so does the potential for change in measurement. On this wise, the correct option is D. Option A, option B and Option C aren't best defined longitudinal research.

the answer is d.index

male citizens in athens could vote on all the decisions that affected the city and serve on juries. however, democracy was not open to everyone. citizen women and children were not allowed to vote. slaves and foreigners living in athens (known as metics) were banned from participating in government.