(If I hadn't shared them) which would be the best password and why?

A) WinterMoon38
B) Flame!Rider204
C) J7$kP2!mQx9#L
D) Echo-Bicycle-Violet-77&

@protonprivacy
C: because it consists of random characters, including lowercase and uppercase letters, numbers, and special characters.

The others may be included in word lists because they appear in dictionaries.

@juergen fyi: https://xkcd.com/936/

The entropy of D is far greater than the entropy of C.

Password Strength

xkcd
@karl
Okay, that sounds interesting... learned something new again.