Which sentence is written correctly in regards to parallel structure? a) seamus liked doing almost any physical activity: hiking, surfing, biking, running, and even spelunking. b) seamus liked doing almost any physical activity: to hike, surfing, biking, running, and even spelunking. c) seamus liked doing almost any physical activity: hiking, he loves surfing, biking, running, and even spelunking. d) seamus liked doing almost any physical activity: hiking, surfing, a nice bike ride, running, and even spelunking.