Question

The most abundant non-metal within the Earth's crust is
1. Carbon
2. Diamond
3. Graphite
4. Quartz

Answer 1

Answer:

1. Carbon

It is most common element

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Answer 2

Answer:

those are not element the only element here is carbon. Two of the given options are basically carbon as diamonds and graphite are allotropes of carbon and quartz  is silicon dioxide soo the most abundant element would be carbon in this case even though the answer is supposed to be oxygen