(c) Only II and III are correct.
Prosperous farmers from Punjab aspire for higher support prices for their crops (II) and assured high family income (III). Better wages and more days of work are goals of landless rural labourers, not prosperous farmers.
The table in Chapter 1 clearly states that prosperous farmers from Punjab want "assured a high family income through higher support prices for their crops." Options I and IV (better wages, more days of work) belong to landless rural labourers. Examiners expect students to distinguish between the developmental goals of different categories of people as given in Table 1.1.