Simply put, credentials are college degrees, apprenticeships, certifications or licenses that give you credibility in your work field. They show your employer and your customers that you have the knowledge and skills to perform your professional function.
Answer:
"If I were you, Joshua, I would not take my warning lightly," Maisy said.
and for the first one
Jayme replied, “I really wish you hadn’t done that.”
“I hope you realize what you’ve started here,” warned Jayme.
both of them would work
