CNSL is extracted from

Answer: Option A

CNSL is extracted from cashew nuts.
Cashew Nut Shell Liquid (CNSL) is a versatile by-product of the cashew industry. The nut has a shell of about $$\frac{1}{8}$$ inch thickness inside which is a soft honeycomb structure containing a dark reddish brown viscous liquid.
Natural CNSL is obtained by the utilization of some solvent extraction technique. It is cheaper, and renewable and is successfully employed to manufacture a variety of useful Phenolic Resin to replace synthetic Phenol in many of its applications with equivalent or better results.