कथन (A): सेक्टर मॉडल (Sector Model) शहरी विकास के संकेंद्री दृष्टिकोण को संशोधित करता है। कारण (R): इसके अनुसार भूमि का उपयोग परिवहन मार्गों के साथ बाहर की ओर सेक्टर बनाते हुए विस्तृत होता है।

Who wrote the famous book 'Cities in Evolution'?

Given below are two statements, one labeled as Assertion (A) and the other as Reason (R): Assertion (A): Urban renewal can be a vital tool for alleviating slum conditions and stimulating the physical and economic revitalization of cities. Reason (R): Urban renewal programs in central cities are often limited by suburban resistance to integrating lower-income and racially diverse families. Select the correct answer using the codes given below: