People can become a part of a when a person becomes part of an electrical that person can be shocked

Do you mean people become part of a 'circut' when a person becomes part of an electrical current?

Circuit

Explanation:

People become part of the circuit

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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