,
A comma is the most common separator.
It tells us when to ... SLOW DOWN.
Without commas, we wouldn't know when to pause.
Think of commas as pauses to take a breath.
There are more rules and guidlines about commas
than any other mark of punctuation because
we use them more often than any other.
Example:
Correct: The dog, said my dad, is scratching at the door and needs to go out for a walk.
