Which one of the following would you be most comfortable doing?

introducing yourself to a stranger

calling a friend to ask a favor

standing to speak at a meeting with a large audience

making a complaint to an executive or politician

returning a call to an angry customer

very comfortable doing any of these

would not be comfortable doing any of these

has to be 1 question answered applying for a job

The most comfortable thing that I would do among the choices is

introducing myself to a stranger

There's no harm in approaching someone and telling them your name and asking for theirs. This is much easier when what you have in mind is purely introducing yourself and asking for other person's name. After that, you can choose to do whatever you want, either start a conversation with a topic or end it at just knowing each other's names.

The other choices involve some form of conflict or negative emotions which is why they're harder to do.