Which formula should she use? distance traveled / amplitude
number of wavelengths/amplitude
number of wavelengths/time
distance traveled / time

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.

if it's not useful, feel free to report for mistake in answer.

i think its 100.

hope this !

idk what is it? is this a question that you know the answer or u dont