| Column-I (Basis of International Trade) | Column-II (Feature) |
|---|---|
| a. Geological structure | ii. It determines the mineral resource base. |
| b. Mineral resources | iii. It provides the base for industrial development. |
| c. Climate | i. It determines the biotic life. |
| d. Cultural factors | iv. The development of crafts and skills is determined by it. |

A ladder of fixed length \( h \) is to be placed along the wall such that it is free to move along the height of the wall.
Based upon the above information, answer the following questions:
(iii) (b) If the foot of the ladder, whose length is 5 m, is being pulled towards the wall such that the rate of decrease of distance \( y \) is \( 2 \, \text{m/s} \), then at what rate is the height on the wall \( x \) increasing when the foot of the ladder is 3 m away from the wall?