The pitch of a sound is related to its
frequency
amplitude

The pitch of a sound is related to its frequency.

Explanation:

The higher the frequency, the higher the pitch will be

Amplitude is related to how loud a sound is

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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