Disposable plastic plates should not be used because
(a) they are made of materials with light weight
(b) they are made of toxic materials
(c) they are made of biodegradable materials
(d) they are made of non-biodegradable materials
(d)
Disposable plastic plates should not be used because they are made of non-biodegradable material, i.e., plastic. They can cause pollution, block drains and harm animals.
Non-biodegradable materials do not get decomposed naturally or even artificially by any means. The only thing we can do with non-biodegradable material is to reduce, reuse and recycle them. So disposable plastic plates should not be used.
Therefore option (D) is correct