B. Compound, because it has a conjunction that combines segments that could be 2 separate thoughts.
D. The subscript 2 indicates that two atoms of aluminum are present in the substance.
<u>Explanation:</u>
Actually, the formula of alumina is Al₂O₃
The subscript 2 tells us that there are 2 Al (Aluminum) atoms, and the subscript 3 says that there are 3 oxygen atoms, so D is the accurate statement.
Choice A is wrong as 3 is not the coefficient, and it is a subscript.
Choice B is wrong since the subscript 2 meant for the aluminium atoms, and not the oxygen atoms.
Finally, choice C is also wrong since the symbol Al refers to the metal aluminium, and not the oxygen.
I would like to think it woulf be the second option
<span>The major theme of "The Rime of the Ancient Mariner" is that D. none of the responses.
I believe D is the correct answer because the rest of the options have nothing to do with the poem. The poem is about doing something bad, and then having to live with it, and search for the people who will be willing to listen to your sad story.
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