Identify from the following, the correct statements with reference to the characteristics of intensive subsistence agriculture dominated by wet paddy cultivation.
(A) Land holdings are very small due to the high density of population.
(B) Farmers work with the help of family labour leading to intensive use of land.
(C) Farm yard manure is used to maintain the fertility of the soil.
(D) The yield per unit area is low, but productivity per labour is high.
Choose the correct answer from the options given below:

Correct option is C

(A) is true. In regions where intensive subsistence agriculture, especially wet paddy cultivation, is practiced, the land holdings tend to be very small because of the high population density.
(B) is true. Intensive use of land is a characteristic of subsistence agriculture, where family labor is predominantly used to maximize agricultural output from small land areas.
(C) is true. To maintain and improve soil fertility in an environmentally sustainable manner, farmyard manure is commonly used in intensive subsistence farming.
(D) is incorrect. Typically, the yield per unit area is high because of the intensive use of labor and inputs, though productivity per labor might not necessarily be high given the labor-intensive nature of the cultivation.