Which sentence is not a run-on sentence? a) she saw that the orange juice was on sale so she bought three gallons for the week. b) even though the couch matched the living room, margie wasn't sure her husband dan, though, was positive about the purchase. c) after cutting the underbrush for hours, jack discovered he was covered in tick bites he knew it was going to be a rough night. d) the young man could always be spotted stretching outside his home each sunday at 9: 00 a. m. in preparation for his two hour run.