Answer is A. Marine West Coast Climate
Answer : Option C, The sample will mainly consist of granite.
Explanation:
Sample collected from was continental crust (a part crust) as the samples were from 60 km deep. Continental crust ranges from 30 km to 70 km and this layer is mainly includes granite. This continental crusts is mainly responsible for formation of distinct land-forms like continents.
Statement A ,B and D informs us about the state and temperature of metals(iron) in core that is inner most layer of the earth.
Alluvial soil is fine-grained sediment usually deposited by flowing water. As for why farmers like it, my guess is because it's so fertile. It's fertile because of all the varied particles contained in it, which includes animal waste and decomposing matter. Crops grow better in it.
The options c) and d) are not true (although d can be partially argued for: they have problems with soil erosion and winds).
a and b however are both true- and they are connected to each other, a being the result of b.
Becasue of this, I think that B is the best option, as they have some but not many natural resources- due to their size.