Select the most appropriate meaning of the given idiom.

It's all Greek to me

I cannot understand anything

The most appropriate meaning of the idiom "it's all Greek to me" is >I cannot understand anything.<

This idiom is used to describe a situation where someone does not understand something at all. The image of Greek is a metaphor for something that is foreign or incomprehensible.

The idiom originated in the Middle Ages, when Greek was a language that was not widely spoken in Europe. It was used to describe something that was very difficult to understand, even for someone who was educated.

For example, you might say that it's all Greek to you if you are listening to a lecture in a foreign language that you do not understand.

The other options are not correct.

• To be aware of historical facts does not mean it's all Greek to me.
• To know a subject well does not mean it's all Greek to me.
• To understand the cause of something does not mean it's all Greek to me.