To think this should not be so controversial?

[apalledandshocked]

So, there is a short story which starts
"Peter and his dad went to the beach together...."

Then a series of questions at the end, the first of which starts
"who did dad go to the beach with?"

I tentatively suggested (when asked for help) that it could be Peter. But apparently it can't possibly be that and I am foolish for suggesting it. Over half an hour spent discussing it together as a family. I don't know what the other questions are because we have not yet got that far.
So... Who do you think Dad went to the beach with?

@apalledandshocked

HOWEVER we have had a breakthrough. DS had a (scheduled) video call with his teacher and asked her. She said "Peter". Not only did he accept this without question but he turned to me and said "see mummy I told you it was Peter." So now Im seriously considering that this was all part of an elaborate scheme to mess with me.

I laughed out loud at this, GS giving me funny looks.

The answer is Peter and your family are overthinking it because it reminds them of one of those trick questions where the answer isn't what it seems. It's a question set for a 6 year old so not going to be that complex. Of course it's Peter.

Ha ha! Love your update. Classic 6 year old.