Natural Fibre

The following is an answer given by Boojho to a question asked by his teacher— “Cotton, wool, silk and jute are classified as natural fibres whereas nylon and polyester are classified as synthetic fibres.” Can you tell what question the teacher has asked?

Natural silk fibre is

In every question, four probable answer options are given, only one is correct out of them. You choose your correct answer and indicate the answer (option): Which is a nature fibre?

Question|Optical Fibre|Graph Between ???? And I|Advantages Of Optical Fibre

Proteins present in the natural silk fibre is

Classify the following fibres as natural or synthetic: nylon, wool, cotton, silk, polyester, jute