Question

can you give me an explanation on why one of them doesn’t belong, it will mean a lot to me if you do!

Answer 1

I believe that the 1st box is equal to and the remaining boxes would be a not equal to.
So the 1st box doesn’t belong.

Answer 2

the top righ andt doesn't belong to each other because the first antenna is at the left. equal means it needs to have a connection or its have to be absolutely the same. in this case the equal picture is not the same