Alternative A would be the best one. D) " $iL0V3dGs6! "
Alternative A is the strongest for a number of reasons. First of all, it starts and ends with symbols, which is usually overlooked when creating passwords.
Another important feature it has is the alternation between upper and lower case letters, as well as numbers instead of letters when spelling the words.
It uses pretty much all of the necessary elements that make a password strong and secure.
All the password formats proposed are equally safe because all of them contain the same elements, that contribute to make it more secure: capital letters, lower-case letters, and symbols such as the "!" or the "@". Moreover, they all include alternation between capital letters and the lower case ones.
