Correct option is B
Silver shoot onion leaf in rice is caused by the Rice Gall Midge (Orseolia oryzae).
It is a significant pest of rice crops, especially in regions with high humidity and stagnant water.
The pest damages the plant by feeding on the growing shoot, leading to the formation of a "silver shoot" or "onion leaf."
Infestation is common during the early stages of rice crop growth.