The correct answer is 4.
Miltiades the Young is known due to this role in the Battle of Marathon in 490 BC, as one of the generals in the Greek forces. He displayed the strategies that enabled to defeat the Persians.
He refused to use the traditional tactics at that moment, such as the phalanx, and he was also totally convinced not to let the Persians reach and siege Athens as it would lead to its destruction.
The orders were to attack the Persians at their arrival at the shore. The Greeks whose the appropiate location, surrounded by marshes and between mountains, to prevent the Persian cavalry to join the soldiers coming from the sea. This was crucial for the final victory of the Greeks.