BRAINLIEST ANSWER PLEASEEEE!!!

What does William Wordsworth mean by "dances with the daffodils" in the following bolded lines?
And then my heart with pleasure fills,
And dances with the daffodils.

He has to go to that field every time he wants to be happy.
The memory of the daffodils can bring him happiness.
Happiness is a state of mind that is never really real.
There is no way to be truly happy without flowers nearby.