which is the best metal to use in an alloy to increase its electrical conductivity?\no al\no cu\no li\no sb

Brief Explanations:

Copper (Cu) is a well - known highly conductive metal. Among the options, it has one of the highest electrical conductivities. Aluminum (Al) is also conductive but less so than Cu. Lithium (Li) is a reactive metal and not typically known for high electrical conductivity in the context of common alloys for conductivity enhancement. Antimony (Sb) is a semi - metal and has relatively low electrical conductivity compared to Cu.

Answer:

B. Cu