The correct answer is longitudinal
Research data can be related to time in two ways: In the first, all variables refer to a single period, time is constant, this is the transversal method. In the second, the variables can refer to different moments, the time is now variable, and the method is now classified as longitudinal.
In longitudinal methods, time is variable. It can be just a before and after, hourly intervals throughout the day, months throughout the year, years over decades ... what matters is that there is more than one moment, more than one period.
A large portion of china's food comes from the Himalayas.
Answer: a. selecting sample members to study because they possess attributes important to understanding the research topic.
Explanation:
A purposive sampling is a sampling technique in which the researchers rely on their own decision or judgement in choosing the members of the population of the study. This is a non-probability sampling as no random selection is made.
This sampling method needs the researcher must be possessing prior knowledge about the purpose of the study so that the researcher can choose the desired and eligible members for the study.
