Final answer:
A registry analysis tool would be the most helpful for Gwendolyn to search for evidence by checking drivers and their installation dates in the system's registry.
Step-by-step explanation:
Gwendolyn, as a digital forensics expert looking to check drivers and their installation dates, would find a registry analysis tool most useful. This type of tool can scan through the system's registry, where information about drivers and their installation dates are typically stored. The registry is a database that Windows operating systems use to store configuration information about the software and hardware on a computer. By analyzing the registry, Gwendolyn can gather evidence related to the creation, modification, and last access times associated with drivers.