Answer:
A. Drylands.
Explanation:
Drylands are characterized by scarcity of water which affects both natural and managed ecosystems.
Answer:
The evidence that a researcher decides to use should be from a credible source and should be track-able.
It can or cannot back the hypothesis created by the researcher. In both cases, the researcher must synthesis it properly into his research. It must build a connection and somewhat extends the points discussed in the hypothesis.
Either way it should have a direction. Something that does not connect to the core of research must not be added in it.
Ok I am guessing but I think D, large oil reserves :))
