Why should be synthetic fibres not worn during summer?

Question

$\begin{array}{1 1} (a)\; \text{Airflow passes over the fiber} \\ (b)\; \text{They are very comfortable to wear as we sweat} \\ (c)\;\text{They have pores which allows air flow} \\ (d)\; \text{The rate of evaporation is less and they do not absorb sweat} \end{array}$