The correct answer is C. Nichrome.
Nichrome is a nickel-chromium alloy that is used in heating elements because it has a high resistance to heat and electricity. It is also non-magnetic and has a high melting point.
Copper is a good conductor of electricity, but it is not a good choice for heating elements because it has a low melting point. Tungsten is also a good conductor of electricity, but it is brittle and can break easily. Zinc is a good conductor of electricity, but it is not a good choice for heating elements because it is not resistant to heat.
Nichrome is the best choice for heating elements because it has the properties that are most desirable for this application.