V. w. ekman is credited with developing the theory of:
a. sea floor spreading

b. global tectonics

c. wind-driven ocean currents

d. seismic profiling

C. wind-driven ocean currents

Explanation:

Ekman developed a theory that winds are the main source for the ocean's current circulation and transportation occurs when the ocean surface gets friction produced by the motion of the winds. And this also leads to the upwelling and downwelling of warm and cold waters.

The correct answer is (a.) in the coming years, the reyes family will save money because solar power requires little maintenance, and the energy used is free.