Question
Question: A spring is made of steel and not of copper because...
A spring is made of steel and not of copper because
A
Steel is more elastic than copper
B
Steel is less elastic than copper
C
Steel is more plastic than copper
D
Steel is less plastic than copper
Answer
Steel is more elastic than copper
Explanation
Solution
: Steel is more elastic than copper. 
It is for this reason that springs are made of steel not copper.