What advantage does a combination drying system provide?

The choice that highlights the advantage of a combination drying system is the utilization of outdoor air to speed up drying. In a combination drying system, both dehumidification and airflow are employed to create optimal drying conditions. By bringing in outdoor air, particularly in conditions where it is less humid than the indoor environment, the system can significantly enhance the rate of evaporation from affected materials. This method effectively harnesses the natural drying properties of the outdoor air, allowing for faster moisture removal from structures and contents that have been exposed to water damage.

This option relates directly to the principle of managing air movement and moisture levels, which are critical for efficient drying. It reflects an understanding of how a combination system can improve drying efficiency by integrating external air conditions into the drying strategy, which leads to quicker restoration of normal humidity levels and reduces the risk of secondary damage such as mold growth.