Read the following passage carefully and answer the question given below.
The development of a mine consists of several principal activities`:` conducting a feasibility study, including a financial analysis to decide whether to abandon or develop the property, designing the mine, acquiring mining rights, filing an Environmental Impact Statement ( EIS) , and preparing the site for production. Preparation could cause environmental damage by excavation of the deposit to remove overburden ( surface material above the ore deposit that is devoid of ore minerals ) prior to mining.
Extraction is the removal of ore from the ground on a large scale by one or more of three principal methods`:` surface mining , underground mining, and in situ mining ( extraction of ore from a deposit using chemical solutions). After the ore is removed from the ground, it is crushed so that the valuable mineral in the ore can be separated from the waste material and concentration by flotation ( a process that separates finely ground minerals from one another by causing some to float in a froth and others to sink), gravity, magnetism, or other methods, usually at the mine site, to prepare it for further stages of processing. The production of large amounts of waste material ( often very acidic ) and particulate emission have led to major environmental and health concerns with ore extraction and concentration.
What is the primary purpose of the passage ?

Options

A. To explain the activities of prior to mining
B. To explain about the floatation
C. To explain about the process of mining and separation methods of minarls
D. None of these

Answer

C