Q1. What does 'OTEC' stand for?
A Oil and Thermal Evolution Convention
B Ocean and Tide Electric Conservation
C Ocean Thermal Energy Conversion Correct
D Oil and Thermal Energy Conservation
Explanation
OTEC expands to Ocean Thermal Energy Conversion. It is an energy technology that uses the temperature difference between warm surface seawater and colder deep seawater to produce power. The expressions built around oil are incorrect because OTEC is an ocean-energy concept, not a petroleum or oil-conservation convention. The wording with tide and electric conservation is also wrong because tidal power is a different marine-energy idea, while OTEC specifically depends on ocean thermal gradients. Therefore the expansion containing ocean, thermal energy and conversion is the only accurate one.