Read the following passage from Bulfinch's Mythology: Milton alludes to the story of Proserpine in Paradise Lost, Book IV.:

"Not that fair field

Of Enna where Proserpine gathering flowers,

Herself a fairer flower, by gloomy Dis (a name for Pluto)

Was gathered, which cost Ceres all that pain."
An allusion of an original work of literature in another work of literature would be an example of which schematic connection?

text-self
text-world
text-text​

How does this excerpt develop the central idea that espionage during the civil war was often carried out by untrained citizens? it enhances the reader’s understanding by explaining why training was unnecessary. it changes the reader’s perception of what information a spy was able to obtain. it explains an ordinary person’s motivation for conducting espionage against the enemy. it adds moral complexity to espionage, due to the use of secret and dangerous methods.