The correct answer is: [B]: "sludge" .
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Forestry and mining
are not industries that are based on importing good. So A is not the answer
are not both Agricultural, so b is not the answer
are industries that exist in the west. so d is not the answer
The only answer that makes sense is C. Industries in the west based on available natural resources.
The Mayan and other Mesoamerican cultures used a vigesimal number system based on base 20 (and, to some extent, base 5), probably originally developed from counting on fingers and toes. The numerals consisted of only three symbols: zero, represented as a shell shape; one, a dot; and five, a bar.
The Earth is made mostly of it. Explanation; Water is the most important erosional agent and erodes most commonly as running waterin streams. However, water in all its forms is erosinonal
Answer is running water