Which choice is best? A. The ink-jet printer works perfectly, its ink cartridges are expensive. B. The ink-jet printer works perfectly. Its ink cartridges, however, are expensive. C. The ink-jet printer works perfectly, however its ink cartridges are expensive. D. The ink-jet printer works perfectly however, its ink cartridges are expensive.

The answer is letter B.

Explanation:

Letter B is "The ink-jet printer works perfectly. Its ink cartridges, however, are expensive.

This is the correct answer because "however" is used properly as a conjunctive adverb. It was properly placed, with a "comma" before and after, in order to connect two independent ideas.

The two ideas are "The ink-jet printer" and "are expensive." These can be understood separately. This is connected by conjunctive adverb, "however."

Letter A is incorrect because the sentence doesn't follow the correct grammatical rule. It is lacking in conjunctive adverb, which would supposedly connect the two clauses. They could have also been separated with a "period."

Letter C & D are incorrect because of improper placing of commas. Both of these sentences lack commas. As for letter C, it lacks comma after "however" while letter D lacks comma before "however." When "however" is used in the middle of the sentence, it should be enclosed in commas.