What characterizes Jargon in speech?

The characteristic that best captures Jargon in speech is that it often involves the use of language specific to a particular field or profession, which can make it hard for those outside that field to understand. While it may seem recognizable to those familiar with the terminology, jargon can create contexts where terms are used in such a way that the overall message becomes nonsensical or difficult to grasp for outside listeners. This specialized language can lead to confusion if the audience lacks the necessary background knowledge.

When analyzing the options, the idea that jargon includes "technical terms" alone might suggest clarity to the informed, but without context, those terms could render speech incomprehensible. The option hinting at overly formal speech might touch on a certain stereotype of professional discourse but fails to capture the essence of jargon’s specialized, often confusing nature. Lastly, while speech with numerous errors might lead to incomprehensibility, it doesn't specifically align with the concept of jargon, which can be perfectly structured yet still inaccessible due to its specialized vocabulary.