Correct answer: B. Because a strong privileged section remained outside the tax base
Explanation: Direct answer: Option B, because a strong privileged section remained outside the tax base. The French monarchy needed more revenue, but the First Estate, mainly the clergy, and the Second Estate, the nobility, enjoyed important tax privileges. Step by step: the state had debts and expenses; it needed greater income; taxes were not shared equally; a wealthy and influential part of society was exempt or paid less; therefore the remaining taxpayers, especially the Third Estate, carried a heavier burden while total revenue stayed insufficient. B correctly identifies the problem. A is less precise: the Third Estate generally could not simply refuse taxes, but the key issue was that privileged orders were outside or largely protected from taxation. C is false because the Church possessed income, land and received tithes. D reverses the relationship: peasants did not collect taxes from nobles; peasants often paid dues and taxes to the state, Church or nobles. Memory cue: fiscal crisis plus unequal exemptions equals an unfair and weak tax system.