Final answer:
Hydroelectric and tidal power together are responsible for a combined total that is closest to 10% of the global energy production, with hydroelectricity accounting for about 9% of the energy share.
Step-by-step explanation:
The question you're asking pertains to the percentage share of hydroelectric and tidal power in global energy production. Based on the provided texts, we know that globally, hydroelectricity accounts for about 9% of energy and tidal power is not explicitly mentioned but is a smaller contributor. Therefore, when considering hydroelectric and tidal power together, their combined contribution is likely closer but not exactly 10% of the total energy production. This would suggest that option (b) 10% is the closest to the actual figure.