How do Valentine's entrance and message affect
the plot?

They make it clear that Duke Orsino's hunting trip
will succeed

They foreshadow the eventual success of Duke

Orsino's pursuit of Olivia.
They point to the obvious fact
that Olivia has
betrayed Duke Orsino.

They suggest an obstacle to Duke Orsino's love for
Olivia.

They suggest an obstacle to Duke Orsino’s love for Olivia

Explanation:

while his customary satire is present in mark twain's short story "the notorious jumping frog of calaveras county," there is a cloaking of this satire as twain's narrator is not directly involved. another literary device that you could build a thesis around is the use by twain of hyperbole.

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