Your question is irrelevant to whether there is evidence of a simple organisms to a complex one.
He's giving you evidence. Single celled yeast undergoes a bunch of mutations, evolves several new traits and the resulting organism is multi-cellular.
Is that an increase in complexity, yes or no?
If yes, then you have just received evidence of an organism growing more complex through evolutionary means.
If no, then you're going to have to define what you mean by "complex" and explain why this yeast example doesn't count.
I don't know what you are driving at, but you are driving me nuts.
Having trouble dealing with the question at hand?
We have been here before. Don't expect me to say what you want to hear while refusing to consider anything I say, or ask you.
This is your normal approach, but I think it needs changing.
Don't like it when your nonsense is being exposed, I guess?
Anyhow....
You asked wheter there is evidence of organisms going from simple to complex by evolutionary means.
Here, you have been given the observed example of single celled yeast undergoing mutations, gaining new traits as a direct result and ending up as a multi-cellular organism.
So, does this count as an organism becoming more complex through evolutionary means or not?
If yes: gratz, you have just gotten the evidence you asked for
If not: explain why it doesn't count.