Which one is grammatically ok?
The audience was delighted with the game.
The audience were delighted with the game.

Question

Answer

Both ok.

1)the group of people   E.G.The audience was/were  clapping for 10 minutes.
2)a number of people or a particular of people E.G.An audience of millions watched the weding on TV.   audiences (plural)

Answer

The audience was delighted with the game.

Audience is singular (audiences is plural).

Same with things like team. "The team was delighted with the game."