Why are regions where convection currents diverge more suitable for building geothermal power stations?

Out of the following choices;

A.)Divergent boundaries create mountains on which to install the stations.

B.)Energy from magma at divergent boundaries is cleaner.

C.)Divergent boundaries are unaffected by magma convection currents.

D.)Divergent boundaries allow heat to rise faster.

The answer is D. The two diverging convention currents bring up the heat from deep below the mantle. They act like two cogs/pulleys that complement each other to bring up very hot asthenospheric materials. Where a divergent boundary occurs, there also occurs a rift such as the Great Rift Valley in East Africa.  

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