What type of cable is specifically rubberized and is meant to carry audio signals?

The correct choice is XLR Cable because it is specifically designed for professional audio applications. XLR cables are known for their robust construction, which often includes a rubberized or flexible outer layer that protects the internal wiring and connections, making them highly durable and effective in transmitting audio signals with minimal interference.

XLR connectors feature a three-pin design that allows for balanced audio transmission, which helps reduce noise and improve sound quality. This is particularly important in live sound environments or studio settings where signal integrity is crucial. The rubberized coating not only provides protection against environmental factors but also adds flexibility, easing handling during setups and breakdowns.

Other types of cables mentioned may carry audio signals as well, but they do not possess the same combination of durability and specifically designed audio transmission characteristics as XLR cables. For example, RCA cables are typically used for consumer-level audio and video connections and lack the balanced audio capability that XLR cables provide. The 1/4" phone plug is often used for instruments and can be found in both balanced and unbalanced formats, but it does not have the same level of professional application as XLR. BNC cables are generally used for video signals rather than audio.