I need help on the last three questions; thank you

Is the group of words a simple sentence, a compound sentence, or a run-on sentence? jan went on a quiz show, won two hundred dollars, and bought gifts for her family. a. run-on sentence b. compound sentence c. simple sentence

The wind skittered playfully along the pathway, drawing leaves and bits of flowers along with it. which word gives the passage a cheerful mood?

What did mark twain contribute to the history of the novel? select all that apply.