Choose the appropriate option to fill in the blank:
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Minerals are broadly classified into three groups: {Metallic minerals}, {Non-metallic minerals}, and {Energy minerals}. Coal and petroleum are common examples of energy minerals.
Concept:
Minerals are naturally occurring substances found in the earth's crust. They are generally classified into three main categories based on their properties and uses: Metallic minerals, Non-metallic minerals, and Energy minerals. Each category includes minerals that serve different purposes.
Step 1: {\color{red}Understand the given classification.}
The diagram shows three groups of minerals:
Metallic minerals — Example: Iron ore
Non-metallic minerals — Example: Mica
A third category represented by coal
Step 2: {\color{red}Identify the category of coal.}
Coal is mainly used as a source of energy and fuel. Therefore, it belongs to the category of energy minerals.
Step 3: {\color{red}Select the correct option.}
Since coal falls under energy resources, the missing category must be:
\[
Energy minerals
\]
Hence, the correct answer is Option (C).
