Question

Several blocks of magnesium are fixed to the bottom of a ship to
(a) make the ship lighter
(b) prevent action of water and salt
(c) prevent puncturing by under-sea rocks
(d) keep away the sharks

Answer 1

C IS CORRECT ANSWER.......

Answer 2

${\huge {\mathfrak {Answer :-}}}$

➡️ Option (C)

That's it..