正解:A
"Axis devices can use action rules with conditions such as schedule, input, or motion detection. For example, an action rule can be set to play a sound through a network speaker if motion is detected outside of business hours."
- Axis Communications Academy, Network Video Fundamentals, 2022
"Action rules allow users to automate responses to events by setting conditions. Example: If motion is detected after hours, play a pre-recorded message on a network speaker."
- Axis Device Event Configuration Guide
References:
Axis Communications Academy, Network Video Fundamentals, 2022 (p. 101)
Axis Event Configuration Technical Note