Answer: 3) industry jargon
Step-by-step explanation:
Industry jargon is defined as the technical terminology that is supposed to be associated with industry components to produce a certain meaning. It defines about certain technical activity of group or people in industry.
According to the question, industry jargon is the reason behind understanding and perception of press release for the IP call adapters as they are not able to get meaning of that technical terminology.
Other options are incorrect because abstract qualifiers, gobbledygook and trigger-words are not the result of difficulty occurring in comprehending. Thus, the correct option is option(3).