Why did the Girl throw the butter out of the window?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

What 5-letter word typed in all capital letters can be read the same upside down?

What has one eye, but can’t see?

What's the only room from which no one can enter or leave

The peacock is a bird that does not lay eggs. How do they get baby peacocks?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

Make a sentence consisting of three words that have the whole alphabet.

What do you get if you add 2 to 100 four times?

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?