Question

Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : Green buildings have a lower life cycle cost than conventional buildings.
Reason R : Green buildings require less maintenance and have lower energy and water consumption.
In the light of the above statements, choose the most appropriate answer from the options given below :

• A. Both A and R are correct and R is the correct explanation of A
• B. Both A and R are correct but R is NOT the correct explanation of A
• C. A is correct but R is not correct
• D. A is not correct but R is correct

Hint:

Life cycle cost = initial cost + running cost + maintenance; green buildings save on the running and maintenance parts.

Answer 1

The Correct Option is A

Assertion A: although a green building may cost somewhat more to build, its energy, water and maintenance savings over its life usually make the total life cycle cost lower than that of a conventional building. So A is correct.
Reason R: green buildings use efficient systems, daylighting, insulation, water recycling and durable materials, so they need less maintenance and consume less energy and water. So R is correct.
The lower running and maintenance costs in R are exactly what bring the life cycle cost down in A, so R explains A.
Answer: (1) Both A and R are correct and R is the correct explanation of A