What is the primary advantage of using dynamic microphones on stage?

The primary advantage of using dynamic microphones on stage is their resistance to moisture. This characteristic makes them particularly suitable for live performances, where environmental factors such as humidity or the possibility of spills can be a concern. Dynamic microphones are constructed with robust materials that can withstand the rigors of a performance setting, and their ability to function well even in less-than-ideal conditions contributes significantly to their popularity among performers.

In contrast to the other options, while sensitivity from one direction and the ability to capture high frequencies are important factors in microphone choice, dynamic microphones are primarily known for their durability and reliability. Their weight and portability can vary, but resistance to moisture stands out as a key benefit, especially in dynamic performance situations where equipment is frequently moved or exposed to varying conditions.