The sequence of events is as follows:
1. (B) Foodgrain production
2. (A) Foodgrain procurement by the Food Corporation of India
3. (D) Determination of minimum support prices for foodgrains
4. (C) Foodgrain distribution through fair price shops
Therefore, the accurate sequence is (B), (A), (D), (C). Consequently, option (d) is the correct answer.

In an economy, exclusion of _______ may lead to under estimation of the value of Gross Domestic Product (GDP).