The correct answer for the statement above would be option C. Allusion is a figurative language which uses an expression to briefly or indirectly refer to a person, place, thing, event, idea or political significance.
1- She refers to founding documents, in order to show her audience that even from its founding, the United States has granted certain rights to all people, and there is no caveat in these documents that states that women do not qualify for these rights.
4- Anthony discusses a conversation with Senator Sumner in which she argued that he had granted freed (male) slaves the right to vote -as they too were people and citizens, and therefore deserved this right- and there was no reason for women to not also be given this right.