The prove that there is a separation between him and his listeners' attitudes to the fourth of July can be reduced from the first paragraph.
The synopsis of the first paragraph expresses that Douglas starts his opening speech well and expresses negativity at the end of the paragraph. He considers his presence at the 4th of July celebration as an embarrassment.
This implies that he considers it a worthless celebration. He expresses his dissatisfaction towards the Americans for not living up to which they proclaimed.
Therefore, the correct answer is as given above.
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