What is the meaning of progressive as it is used in paragraph 12?

The war of the worlds by h. g. wells but, looking, i presently saw something stirring within the then something resembling a little gray snake, about the thickness of a walking stick, coiled up out of the writhing middle and wriggled in the air toward me – and then another the war of the worlds (radio broadcast) by orson welles good heavens, something's wriggling out of the shadow like a gray snake. now it's another one, and another. they look like tentacles to me. which sentence best describes the tone of the passage from the book compared to the passage from the radio broadcast? a. the book has a more matter-of-fact tone, b. the book has an angrier tone. c. the book has a scarier tone. d. the book has a more surprised tone.