Based on evidence of his personality in "Civil Disobedience," what effect would a longer jail stay most likely have had on Thoreau?

In “Civil Disobedience,” Thoreau presents his refusal to pay the poll tax as a deliberate stand against an unjust government, not as a mistake he regretted. He remained firm even while imprisoned, so a longer stay would most likely have strengthened his determination to assert his rights. The choice “It would have hardened his resolve to assert his rights” best fits his character; there is no evidence that he would have turned to crime, doubted himself, or paid the tax.

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