Respuesta :
From the excerpt given above, the sentence which reveals the purpose of the speech is this: 'It shall be my work this evening to prove to you that in thus voting, I not only committed no crime, but instead, simply exercise my citizen's right, guaranteed to me and all United States citizens by the National constitution, beyond the power of any state to deny'.
This sentence shows that the speaker is giving the speech to defend herself concern the crime she committed and to prove to all that she is not guilty of the said crime.
This sentence shows that the speaker is giving the speech to defend herself concern the crime she committed and to prove to all that she is not guilty of the said crime.