What is the easiest most intuitive language for kids to learn to code?

Agree with Jacq that Scratch is probably the most intuitive for kids to pick up. It's a visual programming language with a drag and drop interface. We have taught kids as young as six coding with Scratch. Kids younger than that struggle because their reading ability is limited. For kids between the ages of 4-6 we recommend ScratchJr, a coding app from the makers of Scratch that runs on iOS and Android.