The energy source on Voyager2 is not a nuclear reactor, in which atoms are actively broken apart; rather a kind of nuclear battery that uses natural radioactive decay to produce power.
(A) apart; rather
(B) apart, but rather
(C) apart, but rather that of
(D) apart, but that of
(E) apart: it is that of
What is the difference between A and B? (rather and but rather) Also, anything matters with the use of either ; or , ?
nah, its about parallelism. not + one thing, but + another thing
we need to connect the two clauses by a subordinating conjunction. "but" is a subordinating conjunction and functions to connect the two clauses together.
please read the lessons on parallelism in the verbal lessons forum.
A is wrong because the semicolon can be use to connect only independent clauses. it is not so in A. clause starting with A is dependent clause.
hope this helps