Read the excerpt from the poem "barbara frietchie.” up rose old barbara frietchie then, bowed with her fourscore years and ten; bravest of all in frederick town, she took up the flag the men hauled down; how do the rhyming couplets move the action forward? by including descriptive details about setting by connecting important plot points  by illustrating the author's purpose by using the same number of syllables

The rhyming couplets move the action forward by connecting important plot points.

The poem “Barbara Frietchie”, written by John Greenleaf Whittier tells the story of an elderly woman who refuses to low down her American flag when the Confederate soldiers marched in her town. Stonewall Jackson yelled “Halt!” in the poem when he saw the old flag. When she was in her nineties, she didn’t fear the troops of Stonewall Jackson and waved the Union flag out from her window. She is one of the central figures in the history of Frederick, Maryland.

B

Explanation:

a is the indefinite article