A torpedo is launched under water, targeting a naval vessel about 5,000 m away. How can the vessel detect the torpedo before it reaches the vessel?
A)By By seeing seeing it it flying flying above above the the waterwater
B)By By listening listening for for it it in in the the airair
C)By By listening listening for for it it underwater
D)None None of of the the above. above. It It won’won’t t be be able able to to detect detect it it in in time. time.

C because ships and other boats has underwater microphones underwater because on most cargo ships the engine is to loud so they use microphones underwater to detect torpedos so your answer is C

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.