The correct options are
A Strong
C Durable
Synthetic fibres are man-made materials prepared by chemical processes. For example, rayon, nylon, acrylic, dacron, etc.
Synthetic fibres are used at large scale as they are -
-Strong
-Durable
-Cost effective
-Water-resistant
But, synthetic fibres are not eco-friendly as they don't get decomposed by the microbes.