निम्नलिखित में से कौन सा कारक ग्रामीण से शहरी प्रवास को प्रोत्साहित करने वाले 'पुश फैक्टर' (प्रतिकर्ष कारक) के रूप में कार्य करता है?

Clustered (compact) human settlements are generally expected in which of the following areas?

Villages consisting of several small hamlets separated by fields are termed ________ settlements.

A settlement aligned along a transport corridor or river valley is known as a: