Select the most appropriate meaning of the underlined idiom in the following sentence.

I really don't want to pour cold water on your theory but it cannot be applied to real life situations.

Select the most appropriate meaning of the given idiom.

In a soup

Select the most appropriate idiom/phrase that can substitute the given group of words.

The better you know someone the less you like him.

Select the most appropriate meaning of the underlined phrase.

Though very rich, Alexander always saves for a rainy day.