Answer:
D.) The phrase kinetic energy is frequently used among physicists but may be unfamiliar to ordinary people
Explanation:
Jargon would be considered specific/special words only used by a particular group of people, so not everyone is going to understand it.
The phrase 'Kinetic energy' is something that isn't typically used in a day-to-day conversation, so some people may not understand the definition -- the phrase kinetic energy might be used in a science classroom or a science lab but is unlikely to be used elsewhere.
