Natural insecticide obtained from neem is

Which of the following has proven effective for the biological control of nematode diseases in plants?

What do bionematicides control?

Pyrethrin is extracted from:

Given below are two statements.
Statement $I$: Baculoviruses are pathogens that attack nematodes.
Statement $II$: Baculoviruses are used as biological control agents in ecologically sensitive areas as they are species-specific in their action.
In the light of the above statements, choose the correct answer from the options given below.

Bio-insecticides include: