The correct answer is C. Currents
Explanation
The image in the question is a map showing the North Atlantic and the Caribbean Sea. In the middle of these is a red arrow that marks the Gulf Stream. An ocean current is a massive movement of ocean and sea waters. In the case of the Gulf of Mexico current, this is originated from the movement of warm waters from the Caribbean, which are heated by the latitudinal location because it receives the sun's rays more directly. It moves in a current towards the north of the Atlantic where it is losing temperature due to the difference in the incidence of the solar rays. Therefore, the correct answer is C. Currents.
You'll find lots of clouds over tropical climates and practically no clouds over desert climates. There is heavy rainfall in tropical climates and therefore relatively high rates of evaporation. High rates of evaporation leads to condensation and cloud formation. Desert climates like the Sahara Desert that only receives a few inches of rainfall per year would not have clouds due to the lack of surface water for evaporation.
The First Nation Can be referred as the aboriginal people or indigenous people
The answer is Mahatma Gandhi. He used non-violent methods to revolt against the British.
Hope this helps :)