Which of the following is a setting when a group photograph might be taken

You forgot to list any of “the following” so nobody knows the answer :/

It depends on what type of third separates the three notes.for example: if you have two mayor thirds is an "aumented chord"if you have two minor thirds is an "diminued chord"if you have one mayor first and then one minor is a "mayor chord"and inverted is a "minor chord"