Question

Q.20.Which one of these has been called the backbone of industry? *


A) diamond

B) iron

C) Steel

D) Oil

which option is correct ​

Answer 1

Answer:

$\huge\underline{\mathbb\red{❥︎A}\green{N}\mathbb\blue{S}\purple{W}\mathbb\orange{E}\pink{R}}\:$

Steel

Answer 2

Answer:

option (b) Steel

Explanation:

Steel is called the backbone of the modern industry because almost everything we use is either made of steel or has been made with machinery or tools made out of steel.