Answer:
It indicates that the Spartans are not afraid of the Persians.
Step-by-step explanation:
I'm not sure this question has options, but if it has, then this is the closest related answer.
According to the quotation, a Greek beings news to the Spartans that the Persians are so many in number that when they release their arrows, it blots out the sun. The Spartan replied that this was excellent news, and if it was so they would fight in the shade.
This shows that the Spartans are not afraid of the Persians and their large numbers.