Agricultural Practices in India

While Jowar is the staple in the north, Ragi serves as the primary staple food crop for the population in South Karnataka.

Ibn Battuta's accounts say that the soil was so fertile that it could produce two crops every year, rice being sown three times a year. Sesame, sugarcane, and cotton were also grown. They formed the basis of many village industries, such as oil pressing, the making of jaggery, weaving, etc. A variety of crops were grown, including food crops such as wheat, rice, and barley, and non-food cash crops such as cotton, indigo, and opium. Potato and maize were introduced from the Americas, much later with the colonization by the British. Hence, Option A is correct. The rest of the options include potato(B, D) or maize(C), hence, incorrect. 

Jowar is the third most important food crop with respect to area and production.

Tea plants require well-drained soil and cannot tolerate waterlogging, which is why they are primarily cultivated on the slopes of hills to allow for natural drainage.

Beverage is a drink other than water for human consumption. Among the given options tea and coffee are examples of beverages.

• India is the world's largest pulse producer accounting for 27-28 per cent of global pulse production. It is also the largest consumer of pulses. 
  
• Madhya Pradesh is India’s largest pulse producing state, which accounts for 23% of total pulse production in the country.
  

Tea in Assam and Coffee in Brazil are mono-culture crops provides immediate cash to the farmers.

Sao Paulo is the municipality located in the southeast of Brazil. The expansion of coffee production was the most important factor in the growth of Sao Paulo. It has become the region's chief export crop and also yielded good revenue.

 Tea plant is a shrub. It is an important beverage crop which was introduced in India by British. Tea plant grows well in tropical and subtropical climates. It grows in deep fertile soil. It requires warm and moist climate for the growth. Hence extensive frost destroys the tea plant as it makes the weather very cold. Frost is a thin layer of ice.

A plantation is the large-scale estate meant for farming that specializes in cash crops. The crops that are grown include cotton, coffee, sugarcane, etc.

Bajra.

Sao Paulo is one of the 26 states of the Federal Republic of Brazil and is named after Saint Paul of Tarsus.

After independence in 1820, São Paulo became a major agricultural producer (mainly coffee) in the newly constituted Empire of Brazil.

Tea and coffee are cash crops as they are mainly grown for sale.

The crop is very susceptible to frost; therefore, its cultivation in temperate latitudes is limited. 2. Rainfall: Maize is grown mostly in regions having annual rainfall between 50 cm to 100 cm.