The correct answer is option b, that is, the addition of carbon dioxide to the atmosphere.
If the concentration of carbon dioxide upsurges in the atmosphere due to the enhanced rate of outgassing, there will be a constant elevation in the global temperature. The elevating temperature and more dissolved carbon dioxide will result in enhanced weathering of crystal rocks as a consequence of faster rate of reactions and greater acidity.
This is attitude adjustment theory.
He adjusted his attitude based on the surroundings.
Jet streams are fast moving air currents much like how a river is a fast moving water current so the answer is jet streams.
