Which of the following best describes a clairvoyant?

The term "clairvoyant" specifically refers to someone who is believed to have the ability to perceive events or information beyond the ordinary senses, often associated with extrasensory perception. This definition aligns with the second option, depicting a person who possesses these extrasensory powers as they can supposedly foresee events or gain knowledge about things that are not accessible through conventional means. This understanding of clairvoyants is deeply rooted in mysticism and the paranormal, often related to a heightened intuitive ability that goes beyond normal human capabilities.

The other options do not relate to the core definition of clairvoyance. Being an expert in musical arts, having political insight, or being skilled in scientific measurement does not encompass the definition of clairvoyance, as these roles involve different types of expertise and knowledge that do not pertain to extrasensory abilities.