Read the passage from a princess of mars.

while sola was away i took occasion to examine more minutely the room in which i found myself captive. the mural painting depicted scenes of rare and wonderful beauty; mountains, rivers, lake, ocean, meadow, trees and flowers, winding roadways, sun-kissed gardens—scenes which might have portrayed earthly views but for the different colorings of the vegetation. the work had evidently been wrought by a master hand, so subtle the atmosphere, so perfect the technique; yet nowhere was there a representation of a living animal, either human or brute, by which i could guess at the likeness of these other and perhaps extinct denizens of mars.

based on the passage, the reader can conclude that a princess of mars is a fantasy because it

is told by a narrator.
features a prisoner.
analyzes a piece of art.
is set on another planet.

Front the passage, it can be deduced that Princess of Mars is a fantasy because it is set on another planet.

Fantasy simply means a genre of literature that has to do with magical and supernatural elements that cannot be found in the real world.

Princess of Mars is a fantasy because it is set on another planet. It should be noted that fantasy isn't tied to reality. It was set on another planet which isn't real.

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is set on another planet.

The author finds himself trapped in a room where he looks at beautiful pictures of nature. None of this would seem strange in any work of literature. However, the author goes on to explain that all these images are not earthly views, and that they belong to a race of people in Mars. The fact that the author is in a different planet tells us that this is a work of fantasy.

i believe that the answer is b! i hope i out!