Separation of Substances

ead the story titled “WISE FARMER” and tick the correct
option to complete the story.
A farmer was sad/happy to see his healthy wheat crop ready
for harvest. He harvested the crops and left it under the
sun/rain to dry the stalks. To separate the seeds from the
bundles of the stalk he handpicked/threshed them. After
gathering the seed grains he wanted to separate the stones
and husk from it. His wife winnowed/threshed them to
separate the husk and later sieved/hand picked to remove
stones from it. She ground the wheat grains and sieved/
filtered the flour. The wise farmer and his wife got a good
price for the flour. Can you tell why?