Final answer:
Nickel (Ni) is the correct answer as it is magnetic, used in coinage for the 5-cent pieces, in electroplating, and is a component of nichrome wire. The option (A) is correct.
Step-by-step explanation:
The metal referred to in the question is used in a '5-cent piece and other coins,' in electroplating, and in the making of nichrome wire. Nickel is well-known for its magnetic properties, alongside iron and cobalt. These metals are unique in that they are ferromagnetic which means they can be attracted to magnets and can also be magnetized themselves. Nickel is indeed used in coinage, particularly in the United States five-cent piece, traditionally known as a 'nickel'.
This metal is also used in electroplating, where a thin layer of nickel is added to other metals to provide corrosion resistance and a shiny appearance. Additionally, nickel is a key component of nichrome, an alloy used to make wires that heat up, due to its good electrical resistance and stability at high temperatures. Among the options given, the correct answer is a. Nickel (Ni).