Answer: B) Cross sectional study
Explanation:
Cross-sectional study is defined as the researching method through which population or other subject subset is observed and analyzed at certain period of time to evaluate their behavior.The data is gathered about different different population for assessment.
Other options are incorrect because longitudinal design, cross-lagged panel method or ex-post-facto researching technique is not used for measuring and analyzing the subject at a particular time stamp.Thus, the correct option is option(B).
Thermal because you have to melt rocks for rocks to become other types of rocks.
Answer:
Assume that you would engage in all of the following activities. Then consider what else you could be doing with your time or money if you decided not to engage in those activities. Finally, choose your next best option to determine the opportunity cost for you for each activity. Be sure to fill in the last activity space within the activity of your choice.
Explanation
B to help people understand society
