Which advancement in metalwork was important during the Shang dynasty? Steel was turned into sharp swords.
Bronze was used for multiple purposes.
Gold was turned into valuable jewelry for trade.
Iron was used to make cooking pots and weapons.

Using bronze for metalwork.

Explanation:

Metalworkers developed a highly sophisticated method for casting bronze and used it to make ceremonial objects and weapons.  :)

bronze was used for multiple purposes

Explanation:

Chinese bronze casting and pottery advanced during the Shang dynasty, with bronze typically being used for ritually significant, rather than primarily utilitarian, items. As far back as c. 1500 BC, the early Shang dynasty engaged in large-scale production of bronze -ware vessels and weapons.

the answer is b: a lockout

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