The national insurance firm offers four tiers of coverage plans;
buyers can choose among bronze, silver, gold, and platinum plans, there are no plans that offer greater coverage than the platinum tier or less than the bronze.
(A) buyers can choose among bronze, silver, gold, and platinum plans, there are
Incorrect. The sentence join two independent clauses - "
buyers can choose...plans" and "
there are no....bronze" - using just a comma which is incorrect. Two incorrect clauses can be joined either through semicolon or through using comma+ FANBOYS conjunctions.
(B) because buyers can choose bronze, silver, gold, or platinum, there are
Incorrect. This option changes the meaning of the sentence. It suggests that the unavailability of other plans is because there are 4 plans already present and thus presents a faulty cause-effect relationship and thus this choice is incorrect.
(C) however, buyers can choose among bronze, silver, gold, and platinum, and
Incorrect. The use of comma followed by "
and " at the end suggests that the sentence following "
and " is independent clause. But "
and " is followed by noun phrase "
no plans that offer.....bronze" .
(D) buyers can choose among bronze, silver, gold, platinum plans, but
Incorrect. There is parallelism error in this choice. The last element in the list - bronze, silver, gold, platinum plans - should be preceded by
and .
(E) although buyers can choose among bronze, silver, gold, and platinum plans, there are
Correct. This choice correctly maintains parallelism in the given list and also uses proper contrast through the use of Although X, Y where X and Y are independent clauses.