Concept:Thinning is removing extra seedlings from a crowded stand so that the remaining crops have enough space.
Explanation:During sowing, farmers often plant more seeds than needed to ensure good germination.
As a result, several seedlings may grow together in one position or stand.
If all these seedlings are left, they compete for water, sunlight, air, and nutrients.
This competition can produce weak, poorly developed crops.
Thinning is therefore carried out after germination.
The farmer carefully removes the weaker seedlings.
Only one or two vigorous seedlings are left per stand.
This allows the remaining plants to grow better and produce higher yields.
It is not about replanting empty spaces, applying manure, or controlling pests.
Answer:B. the number of seedlings per stand is reduced to one or two