Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R
Assertion (A): Steel is used in the construction of buildings and bridges.
Reason (R): Steel is more elastic and its elastic limit is high.
In the light of above statements, choose the most appropriate answer from the options given below

Assertion (A): Steel is used in the construction of buildings and bridges.

Reason (R): Steel is more elastic and its elastic limit is high.

Analysis of Assertion (A):

Steel is indeed widely used in construction of buildings and bridges due to its structural properties.

Assertion A is correct.

Analysis of Reason (R):

Steel has a high Young's modulus (approximately 200 GPa), meaning it is highly elastic — it can withstand large stress with minimal strain. Steel also has a high elastic limit, meaning it can bear significant loads without undergoing permanent deformation.

Reason R is correct.

Connection: Steel is used in construction specifically BECAUSE it is more elastic (high Young's modulus) and has a high elastic limit, allowing structures to bear heavy loads safely. R is the correct explanation of A.

The correct answer is Option A: Both A and R are correct and R is the correct explanation of A.