Thick pus of streptococci is conveed thin by enzyme -

Ans. is 'a' i.e.,DNAase Deoxyribonuclease (DNAase) of streptococcus is also called as streptodornase.They cause depolymerization of DNA. They liquefy highly viscous DNA that accumulates in thick pus.This is responsible for the thin serous character of streptococcal exudates.