Which option gives the correct conditional relation between population growth and density?

Correct answer: यदि क्षेत्रफल समान रहे, तो वृद्धि घनत्व बढ़ा सकती है

The direct answer is A. Population density means the number of people living in a unit of area, often expressed as people per square kilometre. The basic relation is density = population ÷ area. If the area remains constant and the population increases, the numerator becomes larger while the denominator stays unchanged, so density increases. This is why the statement is conditional: population growth can raise density when area is unchanged. Option A is correct. Option B is wrong because growth does not always reduce density; under a fixed area it normally raises density. Option C is wrong because growth describes change in population over time, whereas density describes population in relation to area. Option D is wrong because density is not migration alone; it includes all people living in the area, whether they were born there or moved there. If area also changes, the result may be different, so always check both population and area. Memory cue: density is a “people per area” measure, while growth is a “change over time” measure.