Which characteristic of Dracula allows him to be active during the day, although with limitations?

The characteristic that allows Dracula to be active during the day, albeit with limitations, is related to his ability to walk in sunlight. In many interpretations of the Dracula legend, vampires typically find direct sunlight dangerous, as it can weaken or harm them. However, Dracula is often portrayed as having some degree of tolerance for sunlight, which distinguishes him from other vampire lore where exposure to the sun would be fatal. This ability allows him greater freedom compared to those who are completely nocturnal, although he might still face some restrictions or reduced power during the daytime.

The other characteristics, such as transformation abilities, charm and wit, and control over bats, do not directly address the specific aspect of his activity during daylight. Transformation abilities focus more on his capability to change forms rather than his interaction with sunlight, while charm and wit pertain mainly to his interpersonal skills and manipulative nature. Control over bats illustrates his connection to the supernatural but does not affect his ability to be active in sunlight. Thus, the most relevant aspect of his legend that pertains to his daytime activity is his ability to walk in sunlight, albeit under certain limitations.