In the meeting room, your BOSS said something very wrong (the opponents did not notice), shall you correct him and get him ANGRY? or let him continue?

Would let him continue, mention his wrong when most appropriate 

I will try to speak in amicable way and not to offend him but to correct him, as far as I am sure that we have the same goal to achieve in the meeting and till the end I shall support him.

Let him continue, will tell our suggestion at end of the conversation.

I would rather keep him continue, and try to correct it when it is required

yes i suggest the right thing 

I will write him a note and pass it to him, so he will have the opportunity to correct his mistake in the way he likes.

correct him for sure but politely.

i will see the situation and condition of mistake as well as the severity of meeting than take the decision but i will prefer to correct mistake at time

After the meeting I will request him for a private talk and I will tell him his mistake in a professional manner.

I will tell him in privately.