Answer:
Both answers that you have selected are right !
Explanation:
for the top one, you would refer to the participants as a "their", since its to other people, and a group.
the bottom one is "produce really loud, piercing sounds" since it's simply grammatically correct and makes sense when spoken aloud !!
i hope this helps !! :D have a good day
One of my uncle lives in Delhi.
In the first word you have to write One, O capital and at the end you need to put full stop.
Where is the speech at?
ion know 21 ;)))