What type of tone would you use to read the following excerpt? Why would you use that tone?

In WWI, glowworms were used to help read maps. The light did not carry far enough to be detected, but they allowed people to see the map in front of them.

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Explanation:

He is informing the readers how glow worms were used in WWI to help the soldiers see and read their maps.

Maybe a high pitch and informing tone. Because the person is informing in high pitch voice that worms were used in WWI to help the soldiers see and read their maps.