Several great scientific advances were made during the Han Dynasty including:
The Hot Air Balloon
Embroidery
Drawloom (weaving)
Stirrups (for horses)
Rudders for Ships
the magnetic compass
the seismograph
the wheelbarrow
glazed pottery
cast iron technology/ the iron plow
moldboard plow (AKA Kuan)
papermaking
and the development of the trade route know as the "Silk Road"
Advances in farming during the Song Dynasty included new developments in rice cultivation and irrigation systems and pumps.
It was made during the T'ang dynasty
acupuncture
Goods were produced more efficiently.
the role of Zhang Heng in advances are that he made the seismograph, was a respected astronomer, mathematician, engineer and painter during the Eastern Han rates
Rapid advances in medical technology caused a shift in orthopedic treatment during the 20th century from the use of braces, splints, and other mechanical devices, to surgical procedures
the two advances were the aircraft and the tanks
Goods were produced more efficiently.
I am asking myself the same question
the answer is to connect ourselves to cultural context which we are part.
During the Shang dynasty there were a few kinds of ages. For example one of them are the Bronze Age. The Bronze Age is when they used a lot of bronze. Bronze was used for weapons and art.
the answer is c, advances in technology