What type of signals are used to supplement audible signals in brightly lit spaces?

Visual signals are indeed the correct choice for supplementing audible signals in brightly lit spaces. In environments where noise levels might mask auditory cues, visual signals become crucial for effective communication. This can involve the use of flashing lights, banners, or screens that convey important information or alerts.

In brightly lit spaces, visual cues can capture attention more effectively since ambient light can enhance visibility and make these signals stand out. For example, in emergency situations where audible alarms may not be easily heard over other sounds, visual signals can provide an essential layer of awareness, ensuring that individuals can still receive important alerts.

The other types of signals, such as haptic signals (which involve touch), would not be as effective in bright spaces where visual cues would take precedence. Thermal signals, related to temperature changes, do not provide immediate or clear information in the same way that visual signals do. Therefore, visual signals are the most appropriate choice for supplementing audible signals in such environments.