Final answer:
The rock quartet mentioned is not among the options. The bands listed are associated with punk and new wave, not jazz. A band known for a jazz-like sound and brass elements is Chicago.
Step-by-step explanation:
The rock quartet with a brass section and later with a saxophone that produced a sound closer to jazz than to rock is not among the options provided. However, one band known for incorporating brass and saxophone elements, creating a blend closer to jazz, was Chicago.
None of the options given—The Clash, The Sex Pistols, The Stranglers, or The Buzzcocks—are known for a jazz-like sound. Rather, these bands are associated with the punk and new wave movements, which typically featured a more straightforward, guitar-driven rock sound without extensive brass or woodwind sections.