Threshing is an important part of harvesting rice. Threshing machines are usually not used because the
A grains of rice must be removed from the stalks by hand.
B machines are too expensive for many families to afford.
C rice stalks sometimes grow onto sloped wooden surfaces.
D machines can cause damage to the plants and animals in the fields.
The correct answer is B machines are too expensive for many families to afford.
Explanation: In many rice farming communities, particularly in developing countries, families may rely on manual threshing because they cannot afford the cost of threshing machines. This makes manual labor a more viable option for them, despite it being more time-consuming. If you have more questions or need further explanation, feel free to ask!