People moving from a drought-affected area to a city with jobs show which combined reason for migration?

Correct answer: Push at the source and pull at the destination

The direct answer is option A: a push factor at the source and a pull factor at the destination. A drought-affected area may have less water, damaged crops, fewer livelihood opportunities or difficult living conditions. Such an unfavourable condition encourages people to leave, so it is called a push factor. The city has jobs and possibly better income opportunities; these favourable conditions attract people toward it, so they are pull factors. The direction of movement is explained by both sides working together. Option B is incorrect because birth is a demographic event, not the stated reason for moving. Option C is incorrect because the question does not describe death as the cause. Option D is incorrect because natural increase is births minus deaths and does not explain movement from one place to another. Memory cue: problems push people out; opportunities pull people in.