Which does not contain a run-on sentence?
AThe Big Dipper is almost always visible in the Northern Hemisphere, so these stars make a good reference point.
BThe Big Dipper is almost always visible in the Northern Hemisphere these stars make a good reference point.
CThe Big Dipper makes a good reference point, these stars are almost always visible in the Northern Hemisphere.
DThe Big Dipper is almost always visible, these stars make a good reference point in the Northern Hemisphere.
AThe Big Dipper is almost always visible in the Northern Hemisphere, so these stars make a good reference point.
BThe Big Dipper is almost always visible in the Northern Hemisphere these stars make a good reference point.
CThe Big Dipper makes a good reference point, these stars are almost always visible in the Northern Hemisphere.
DThe Big Dipper is almost always visible, these stars make a good reference point in the Northern Hemisphere.