The trail veered off to the north side of the mountain and started to look quite precarious. The path dangerously narrowed with a steep drop on the left, while the trail itself was not only rocky but slippery as well. On the right, the ground rose into a high cliff that was covered with green moss. Which phrase helps to determine the meaning of the word precarious in the paragraph?

Which does not contain a run-on sentence? a. using the big dipper, you can find the north star, just follow an imaginary line through the dipper's two end stars. b. using the big dipper, you can find the north star just follow an imaginary line through the dipper's two end stars. c. using the big dipper, you can find the north star by following an imaginary line through the dipper's two end stars. d. using the big dipper; find the north star just follow an imaginary line through the dipper's two end stars.