What is a pass$-$the$-$hash $($PtH$)$ attack?

What is a pass$-$the$-$hash $($PtH$)$ attack?

what us the answer?

$1.$A credential theft attack that uses hashed passwords.

$2.$A type of malware that steals user passwords.

$3.$A technique for bypassing firewalls.

$4.$A method of gaining physical access to a system