Bronze is an Alloy of
Option 1 is the right answer
Bronze is an alloy consisting primarily of copper and the addition of other metals (usually tin) and sometimes arsenic, phosphorus, aluminium, manganese, and silicon. These additions produces an alloy much harder than copper alone. The historical period where the archeological record contains many bronze artifacts is known as the Bronze Age.
Various kinds of bronze are used in many different industrial applications.
Phosphor bronze is used for ships’ propellers, musical instruments, and electrical contacts. Bearings are often made of bronze for its friction properties. It can be filled with oil to make the proprietary Oilite and similar material for bearings. Aluminium bronze is very hard and is used for bearings and machine tool ways.