Question

What does Reverend Parris find in his door in act 4 that has him so concerned?. . A:his empty lockbox. B:a broomstick. C:a dagger. D:an affidavit

Answer 1

Assuming that you're talking about "the Crucible"

the thing that Reverend Parris find in his door that has him so concerned is : C. A Dagger

He's concerned because he feared that someone might after his life

hope this helps