Answer:
A. Ore is the correct answer.
Step-by-step explanation:
A naturally occurring sediment which contains minerals and economically important elements that can be profitably extracted is known as ore, they are extracted through mining and then refined to get the elements. The concentration of the ore and its form affect the cost of mining.Oxides, Sulfides, Silicates are ores. Ore's are formed by different geological processes and the process is called ore genesis.