Which of the following metals reacts with cold water?

Sodium is the metal among the given options that reacts vigorously with cold water. When sodium reacts with cold water, it forms sodium hydroxide and hydrogen gas; the reaction is highly exothermic. Unlike sodium, metals such as zinc, iron, and aluminium do not react with cold or hot water; they only react when exposed to steam. Due to its extreme reactivity with both water and the moisture in the air, sodium is traditionally stored submerged in kerosene to prevent accidental combustion.