The answer to your question is c.invented because it's a past participle.
Answer:
Lindner’s tone is desperate and abrupt.
Explanation: TRUST
A:
- Complainer
- Whiner
- Bellyacher
- Protester
- Fusser
I would feel slightly intimidated that somebody so young could be prepared for such jobs but starting earlier could help their experience. the expectations are high these days because apprenticeship is popular, but imagine how it was back then. It wouldn't completely put me off apprenticeship but I understand the uncertainty because of competition for employment and eagerness to impress/work hard under stressful conditions.
