Answer: The most correct option is "B. Fell because of a surplus of crops".
Explanation: As the farmers produces more crops, thereby making the market to have surplus crops, the prices of the crop will definitely reduce, due to competition between sellers, which reduces the worth of such crop in the market.
This happens in accordance with the principle of price and supply in economics. When the supply is high the price is low, and when the supply is low, the price becomes high. Therefore; price is inversely proportional to supply.
That is why it is always important for regulating body to always regulate the supply of a particular product, according to demand rate, so as to avoid excess supply.
An example is the fall of the price of crud oil during the pandemic, due to excess supply that was not equivalent to the rate of demand.
