The question below consists of a set of labelled sentences. Out of the four options given, select the most logical order of the sentences to form a coherent paragraph.

P- The magnitude of the interdependence depends on the technique of production causing the shifts in the food supply curve. 
Q- Interdependence of food and labour market is important for the development process. 
R- Similarly, an upward shift in the food supply curve shifts up the food demand curve.
S- An upward shift in the food supply curve would simultaneously result in an upward shift in the labour demand curve.