The answer would be the city workers
Answer:
c) guarded their guild privileges jealously.
Explanation:
Guilds were an association of merchants who used to oversee the practice in their respective area. It was usually occupied by men, who were very guarded about their previleges.
So the correct answer is:
c) guarded their guild privileges jealously.
Leonardo da Vinci envisioned these centuries before they were invented, as well as the helicopter and many other inventions.