Tiger and Lamb because the beginning and end have to be opposites, not similar
Answer:
I think it would be all of the above, if you could provide a passage with the question it would be helpful. But I'm not 100% sure if it would be all of the above.
Answer:
Ocean currents can be caused by wind, density differences in water masses caused by temperature and salinity variations, gravity, and events such as earthquakes or storms.