Which of the following describes direct glue installation?

Direct glue installation refers to a method where carpet is adhered directly to the subfloor using adhesive, without the use of a separate pad. The characteristic that supports this method is its impact on the longevity of the carpet. This type of installation can lead to a reduction in the carpet's lifespan primarily because it can make the carpet more susceptible to wear and tear as it has less cushioning, which would typically be provided by padding. As the carpet experiences foot traffic, the direct connection to the floor can result in faster degradation.

In contrast, other methods of carpet installation, such as stretch-in or loose-lay, often provide some degree of thermal and acoustic insulation from padding, which can prolong the life of the carpet. Therefore, while direct glue installation may not inherently reduce the lifespan by exactly one-third, it creates conditions that can compromise the longevity of the carpet more than other installation methods.

The other options do not accurately describe direct glue installation. It does not require padding, as the name suggests that the carpet is glued directly to the floor. Also, while some might consider a direct glue installation soft due to the absence of a cushion layer, it is typically not regarded as the softest method available. Lastly, although direct glue installation can be applied