Shellac secreted by lac insects is:
Correct option is D. Any of these
Shellac is a resin secreted by the female lac bug on trees in the forests of India and Thailand. So a natural resin.
Shellac is a natural bioadhesive polymer and is chemically similar to synthetic polymers, and thus can be considered a natural form of plastic. It can be turned into a molding compound when mixed with wood flour and molded under heat and pressure methods, so it can also be classified as thermoplastic. So a natural elastic.
Hence, option $$D$$ is correct.