Question: Why is diamond costly?
(1) it sparkles
(2) it is hardest substance
(3) it is scarce
(4) it is liked by rich people
Correct Answer: (3) it is scarce
More Question
Question: Why is diamond costly?
(1) it sparkles
(2) it is hardest substance
(3) it is scarce
(4) it is liked by rich people
Correct Answer: (3) it is scarce