The answer is: [A]: Idiom.
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The phrase: "castles in the air" is an idiom.
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Explanation: "Castles in the air", literally speaking, are impossible to exist or be created.
So, when used as an idiomatic phrase, it refers to events that cannot, or likely will not, be possible to achieve.
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I think this is math. Well anyway,
(11x8)+(11x6)+(8x6)
=88+66+48
=204inches^2
Answer: 204 inches squared.
Answer:
Metrical pattern consisting of lines unrhymed iambic pentameter, calles black verse.
Explanation: