Multifactor authentication is more secured than the rest because it has more than one aspect to authentication Multifactor authentication is composed of, at a minimum, two of the following aspects- something you know, something you are, or something you have. Something you know can be a password, passphrase, and so on. Something you have can be something like a number-generating transmit a number or fob, a smartphone capable of receiving text messages, or even a phone that can receive a call and then to the individual but that is only accessible from a very specific phone number.
Something you are is a biometric trait of yourself, as a living creature. This could be as unique and specific as your DNA fingerprint, or as cursorily general as a photograph.