ANS:A - Lead

Among the options provided, lead has the maximum malleability. Explanation: Malleability is a mechanical property of materials that describes their ability to be deformed under compressive stress, such as rolling or hammering, without fracturing. A material with high malleability can be easily shaped into thin sheets or flattened without breaking. Lead is renowned for its exceptional malleability. It is one of the softest and most malleable metals, making it extremely easy to deform under pressure. Lead can be rolled or hammered into thin sheets with minimal effort, making it ideal for various applications such as roofing, piping, and radiation shielding. While copper, aluminium, and wrought iron are also malleable materials, lead surpasses them in terms of malleability. Copper and aluminium are commonly used for their malleability in electrical wiring, construction, and manufacturing. Wrought iron, although less malleable than lead, is still relatively easy to shape and form into various structural and decorative elements. Therefore, among the options provided, lead has the maximum malleability.