To satisfy Relativity's password requirements, how many types of characters must the password include?

The requirement for a password to include a mix of characters is designed to enhance security. The inclusion of one upper case letter, one lower case letter, and one special symbol ensures that the password is complex enough to resist common forms of attacks, such as brute force or dictionary attacks. This combination of character types increases the overall entropy of the password, making it significantly harder for unauthorized users to guess or crack.

Adding these diverse elements into a password helps to create a stronger, more unique string of characters. Passwords that use only a single type of character, such as just upper case letters or digits, do not meet security best practices, as they may be easier to predict or crack. Therefore, the answer that requires a combination of different types of characters aligns with the fundamental principles of creating secure passwords.