The correct answer is: a) Gold.
Assamese jewelry is traditionally made from gold, silver, and copper. Gold is the most popular choice, as it is considered to be a symbol of wealth and prosperity. Silver is also popular, as it is more affordable than gold and is still considered to be a precious metal. Copper is less common, but it is still used in some traditional Assamese jewelry.
Gold is a soft metal that is easily worked into intricate designs. It is also a very durable metal that will not tarnish or rust. Silver is a harder metal than gold, but it is still easy to work with. It is also a very shiny metal that reflects light beautifully. Copper is a reddish-brown metal that is not as shiny as gold or silver. It is also a softer metal than gold or silver, so it is not as durable.
All three metals are used in traditional Assamese jewelry, but gold is the most popular choice. Gold is considered to be a symbol of wealth and prosperity, and it is also a very durable metal that will not tarnish or rust. Silver is also popular, as it is more affordable than gold and is still considered to be a precious metal. Copper is less common, but it is still used in some traditional Assamese jewelry.