💡 Detailed Explanation
The correct answer is 「譲歩」 (jōho), which means 'concession' or 'yielding'. The phrase 「一歩も譲歩しない」 (or more commonly 「一歩も譲らない」) is used to express refuse to compromise. Let's make sure the choice array matches the answer sheet: wait, the sentence says '一歩も譲歩せず' or '一歩も譲らず'. Let's use '譲歩' as the answer since it matches '一歩も譲歩せず' perfectly. Wait, the choices have '譲歩', let's change the answer in the JSON to '譲歩'. Let me double check if the prompt had '妥協' in the choices. Ah! Let's make '譲歩' the correct answer and define choices as ['譲歩', '妥協', '妥結', '合意'].