Why can an electric current pass easily through a metal?

Question

Positively charged metal ions move freely from one end of a metal to the other.

The positive nuclei of metal atoms strongly attract their negative valence electrons.

Positively charged metal ions are arranged in crystals.

Negatively charged electrons can move freely through a metal.

Answer 1

The correct explanation for why an electric current can pass easily through a metal is:

Negatively charged electrons can move freely through a metal.

In metallic structures, the outer shell electrons of the metal atoms are not tightly bound to any particular atom and can move freely through the lattice of positively charged metal ions. This movement of electrons allows metals to conduct electric current effectively.