Answer:
Through its prior delimitation of the candidates for Chief Executive, the government of the People's Republic of China limits the right of its citizens to the free election of their representatives. In other words, it previously delimits this right, prohibiting its citizens from choosing candidates who do not belong to the Communist Party, with which their decision-making power is severely limited. This situation directly attacks the concept of democracy, which implies the free and unrestrained election of representatives by the citizens of a country.
The correct answer is:
The children are wearing loose clothing. The children are exposed to dangerous machinery. The children are not wearing any protective gear.
These are some of the dangers these child workers were exposed to.

The correct answer is - Large numbers of migratory birds;
The number of the migratory birds has always been pretty high and it hadn't resulted in the drying up of the Ogallala Aquifer, not to mention that those birds can not even reach that water because it is underground. Also, the number of the migratory birds have been steadily lowering, so even if they were using that water for drinking, it wouldn't have caused the drying out.
The Ogallala Aquifer has started to dry out because of numerous reasons, with the usage of its water for irrigation being the prime reason. The droughts have become longer, and the temperatures little higher, while the rainfall slightly smaller, so all of that affected the reserves of water in the aquifer negatively.
The answer would be D, Judicial Review :)