Answer: A) magnesium
Explanation:
Magnesium is a metal which has luster. It is malleable and ductile as most of the metal. It is a good conductor of heat and electricity. It is solid at room temperature.
Rest of others do not have the listed properties .
As mercury is not malleable and ductile as it is a liquid metal.
Neon is noble gas. Phosphorus is a non-metal, cannot beaten up to make sheets.
