Which one of the following economic subjects does not come in the ambit of the Finance Commission of India?

Correct option is D

The Finance Commission of India is primarily responsible for:

1. The division and distribution of taxes between the Union and the States (statement a),
2. Recommending grants-in-aid to the States (statement b), and
3. Addressing other financial matters concerning the relationship between the Union and the States (statement c)​

However, the devolution of plan revenue resources (statement d) typically falls under the ambit of the Planning Commission (now replaced by the NITI Aayog), which deals with developmental planning and allocation of plan funds, not under the Finance Commission. The Finance Commission focuses on non-plan revenue sharing between the Centre and States.