A claim that was not substantiated (an unsubstantiated claim) is one that has not been proved as true or valid. It is unconfirmed; unproven; unsupported.
Generally speaking, a substantiated claim would be the exact opposite of the one described above. It is a statement that has nothing to do with opinions, known to be true, or supported by evidence.
I think the correct answer from the choices listed above is option B. The narrator allude the to the possibility of requiring a wife who could match Adams social standards at the end of the sentence from Mark Twain's "The 1,000,000 Bank-Note". Hope this answers the question.
Annabeth's actions in Chapter 18, when she distracts Cerberus with the red ball she stole, prove that she is intelligent and quick on her feet, always preparing. These are all traits of a daughter of the goddess Athena.
