“So many choices!”
You go out to a Chinese restaurant with a group of friends. The menu has over 100 different items. You say this because you're not sure what to get.
So many choices!
So (many/much) (something)!
In a casual situation, when you are surprised by how many or how much of something there is, you can remark, "So many ___!" or "So much ___!"
In more formal situations, you need to say "There are so many ___!" or "There's so much ___!"
This should be pronounced with the strongest stress on the word "so":
So many choices!
choices
"Choices" are things or actions that you are able to choose from. For example, each item on the menu at a restaurant you're eating at is "a choice" that you have. Each action that you decide to do or not do is "a choice".
Another word for "choices" is "options".