What is used for salvage operations and underwater exploration?

Options :
  1. Bathyscaphe
  2. Spectrometer
  3. Grinder
  4. Submarine


Answer and Explanation :-

Answer: Option 1

Explanation:

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Will you beat me if I say no?" he whispered fearfully.September thought she might cry. "Oh...oh dear. Not all the world is like that. Well. I am not like that.
-Catherynne M. Valente The Girl Who Circumnavigated Fairyland in a Ship of Her Own Making