Physics question? Power stations?

Hey, so how would you answer this question in order to gain 10 marks, at around a B-/ B+/A- level? What I know about this question is that you have to state advantages and disadvantages etc. Also compare power stations etc. However what key terms and words, would you add in, and how would you structure your answer to gain the best marks?

Question: The prevailing wind is from the west. There is a nearby mountainous area, from which a river flows through the region. The major road and rail links are shown.

A power stations to be built to supply electrical energy to the region. The energy will be used a range of domestic and industrial uses.

the choice is between a coal fired power station, wind turbines, and a hydroelectric scheme.

three local groups each support a different option.Choose which option you would support and justify your choice by making reference to financial, social and environmental implications of your choice compared with those of an alternative systems.

Thanks in advance.