Which of the following statements about threshing of rice are true? I.Rice grains are separated from the panicle II.Breakage of some grains could occur III....

Threshing is the process of separating rice grains from the panicle. This is usually done by beating the panicles to loosen the grains. So, the statement "Rice grains are separated from the panicle" is true and corresponds to option (A) and (D). During the threshing process, there is a possibility of breakage of some grains. This is because the grains are subjected to a lot of force, and some of them may be damaged. Therefore, the statement "Breakage of some grains could occur" is also true and corresponds to option (A) and (D). However, the statement "The grains are polished" is not true. Polishing is a separate process that is done after threshing to remove the outer layer of the grain. This is done to give the rice a shiny appearance and improve its texture. Therefore, option (B) and (C) are not correct. In conclusion, the correct options are either (A) or (D), which are I and II Only, or I, II and III.