No question!
A quality folder or fix blade concealed.
IMHO a multitool is not a survival tool but a convenience item.
I own several multitools and use them often enough but for survival purposes a decent knife is unequaled in utility.
Don't forget you cant fend off or deter an attacker with a pair of pliers.
Personal protection is a matter of EDC and survival in my opinion and should not be overlooked.
Flip