Correct answer: B. Because people in crisis wanted quick solutions
Explanation: The direct answer is B: people in crisis wanted quick solutions. Promises become especially attractive when ordinary people face unemployment, inflation, political disorder or national humiliation. Nazi propaganda used short, confident promises and claimed that one strong movement could solve difficult problems quickly. Step by step: crisis creates fear and frustration; frustrated people search for hope; simple promises are easier to understand than complicated democratic programmes; a party making those promises can gain support. Option A is wrong because the presence of serious problems made promises effective; people were not problem-free. Option B is correct because it connects crisis, desire for immediate relief and political support. Option C is wrong because Nazi promises were directed mainly at groups within Germany, not only foreigners. Option D is wrong because Nazi leaders used mass meetings, speeches, posters, radio and other public propaganda. The promises did not automatically make them true, but they were politically persuasive. Memory cue: crisis creates demand for simple and quick political answers.