1.( Similar to rising interest rates, consumer and producer prices have been rising.)
B. consumer and producer prices have been rising, as have interest rates.
Who not A?
2.Byron possessed powers of observation that would have made him a great anthropologist and that (makes his letters as a group the rival of) the best novels of the time.
E. make his letters a group which is the rival of
it should use makes instead of make, the subject is that.
3.( For almost a hundred years after having its beginning in 1788), England exiled some 160,000criminals to Australia.
D. During a hundred of years, a period beginning in 1788.
E. Over a period of a hundred years beginning in 1788.