Number 3 and 4 is what I would say because scientifically we haven’t been able to do number 4 yet, and it’s not possible for someone to be alive to this day that was on the titanic.
If you are asking the difference between the two words, then a partner means a pair of two people working together on a project or activity, where as a friend is a person in which one has a close bond or relationship with that is platonic.
That's awesome did you write that?