Answer:
4 explain the main ideas in something you read, heard, or watches
The correct answer is a subject and a verb~
This shows how much Claudius cares about being King and holding onto his throne.
He knows that the public loves Hamlet, which is why he can't just arrest him for the murder of Polonius, he has to be much sneakier and trickier than that, otherwise the public will take Hamlet's side and Claudius will lose support.
Credible would be
Someone who's credible is honest and believable. ... Similar to words like reliable and plausible, credible is an adjective that comes to us from the Latin credibilis, meaning “worthy to be believed.” A credible reputation is often earned through consistent good behavior and an overall trustworthy personality.