Answer:
b. Cellulose acetate
Explanation:
Cellulose acetate is acetate ester of the cellulose.
The material was first prepared in 1865. It is used as film base in the photography as component in coatings and also as frame material for the eyeglasses. Also, it is used as synthetic fiber in the manufacture of the cigarette filters and also in playing cards. It is used because it is far less flammable and also cheaper to produce. It provides support and stiffness to the X-ray film and further helps in producing good results.
