In the question given below, there are 2 statements marked as Assertion (A) and Reason (R). Choose the correct alternative from the following options.

Assertion (A)- Infrastructure contributes to the economic development of a country.
Reason (R)- Developed infrastructure increases the productivity of the factors of production and improves the quality of life of its people.

Both (A) and (R) are true and (R) is the correct explanation.

Infrastructure contributes to the economic development of a country both by increasing the productivity of the factors of production and improving the quality of life of its people. Inadequate infrastructure can have multiple adverse effects on health which in turn reduces the quality of life of the people living in that country.