5%
10%
15%
20%
Answer is Wrong!
Answer is Right!
The correct answer is A. 5%.
A stone is rejected if it absorbs water more than 5% because it is considered to be too porous. A porous stone will not be able to hold up to the weight
of a building and is therefore not safe to use.Option B, 10%, is incorrect because it is not the standard for rejecting stones. Option C, 15%, is incorrect because it
is not the standard for rejecting stones. Option D, 20%, is incorrect because it is not the standard for rejecting stones.The standard for rejecting stones is 5%. This means that if a stone absorbs more than 5% of its weight in water, it is considered to be too porous and will be rejected.