What is the range of slump for concrete used in the wall?

The correct answer reflects the typical slump range for concrete used in wall construction, which is essential for ensuring the proper workability and strength of the concrete mix. In general, a slump of 4 inches minimum to 8 inches maximum is considered suitable for wall applications. This range provides enough flow without compromising the structural integrity of the concrete once it sets.

A slump that is too low may result in difficulty during placement and could lead to inadequate consolidation, while a slump that is too high might result in segregation of the mix components, leading to weaknesses in the cured concrete. Therefore, option B represents a balanced choice that aligns with industry standards for wall construction, enabling both ease of use and structural performance.

Other ranges provided by the incorrect choices either set the minimum slump too low or the maximum slump too high, thus deviating from the recommended practices for wall concrete.