Is this a run-on sentence?

Which of the following best describes the central idea of the article? a the tuskegee airmen started the civil rights movement by proving that black pilots are more skilled than white pilots. b the tuskegee airmen proved that black and white pilots had the same potential, which break racial barriers. c despite breaking racial barriers, the tuskegee airmen faced racial discrimination and were never recognized for their military success. d black pilots in the military had to work twice as hard as white pilots, and due to a lack of funds they were underprepared.

Read the excerpt from "doc rabbit, bruh fox, and tar baby" from the people could fly that was the way bruh fox found him. doc rabbit was stuck in tar baby. bruh fox got him loose, "what must i do with you? " bruh fox said. he led rabbit along to the house they were buildin. "you the one drank up my crock of cream. i didn't get one taste. . " which best describes the message of this fable

What word or phrase is modified by the prepositional phrase in the sentence below? marisol's puppy likes napping under the couch because it is warm and cozy