What might happen if you heard an idiom you weren’t familiar with?

One way to show a character is a) to use dialogue b) use dynamic sentences c) interview friends d) share details

How does thornton wilder make the stage manager a memorable likable and trustworthy character use evidence from the text to support the answer ( our town)

Aprimary source: a- may be biased b- is never biased c- cannot possibly have bias d- none of the above