Answer: Option (c) is the correct answer.
Step-by-step explanation:
In metallic bonding, the valence electrons are involved in bonding with many atoms.
As a result, valence electrons dissociate within their atomic core and form a sea of electrons which helps in binding the positively charged ions.
Thus, we can conclude that the bonding within lead help to explain this property as metallic bonds involve many valence electrons shared by many atoms, so the bonds can move around as the metal is pounded.