Question

metals are used in many products because of the characteristic properties that most metals share. which properties of the metal tungsten make it useful in the thin, glowing filaments of light bulbs?
tungsten is electrically conductive, ductile, and opaque.
tungsten is ductile, is malleable, and has a high luster.
tungsten is ductile, has a high melting point, and is electrically conductive.
tungsten has a high luster, has a high melting point, and is silver in color.

Explanation:

Light bulb filaments need to conduct electricity to produce heat and light, be drawn into thin wires (ductile), and resist melting at the extremely high temperatures generated during operation. High melting point prevents the filament from breaking down when glowing, electrical conductivity allows current to flow to create heat/light, and ductility lets it be formed into the thin filament shape. Other properties like luster, color, malleability, or opacity are not relevant to its function in a light bulb.

Answer:

Tungsten is ductile, has a high melting point, and is electrically conductive.