Explanation:

Let’s break it down, looking at all the options:

- India: Huge population in agriculture for decades. Services have grown, but the shift away from farming has been slow and gradual.

- Pakistan: Still has a pretty big agricultural sector, and the movement to services hasn’t been especially rapid compared to some neighbors.

- China: Went big on manufacturing first; but over time, a lot of workers moved out of agriculture, and now services are surging. The scale and speed of change in China has been massive compared to India and Pakistan.

- Both (A) and (B): Both India and Pakistan have lagged behind China in this shift.

So, the fastest shift from farm work to service jobs? That’s China.

The right answer is option:3

China