Option A is correct because Roman emperors were rather incompetent. Their region was harsh and people didn't like them in general. That made internal problems in the country.
Option B is also correct because through time Roman army lost its stability and discipline. Many mercenaries were part of it, and this led to its inefficiency.
Option C is not correct as new capital that was created on the east was the source of stability on the East. But, Western Empire had its own problems.
<span>Blue Shift wouldn't effect the big bang theory at all. A light move towards us it is in the blue spectrum of light and as it moves away it is in the red spectrum. Now if they discovered redshift in a distant galaxy that might change things.Does that help? </span>
