What is the best way to combine sentences 2 and 3? A. Salt is a very common ingredient in many foods; finally, salt is so widespread that doctors today warn us about getting too much of it. B. Salt is a very common ingredient in many foods, and it is so widespread that doctors today warn us about getting too much of it. C. Salt is a very common ingredient in many foods as long as it is so widespread that doctors today warn us about getting too much of it. D. Salt is a very common ingredient in many foods only if salt is so widespread that doctors today warn us about getting too much of salt.

B. Salt is a very common ingredient in many foods, and it is so widespread that doctors today warn us about getting too much of it.

Explanation:

The sentence framing of the whole sentence is such that it contains two independent clauses that are capable of standing on their own and making their own points.

The right construction to join the sentences 2 and 3 is option (B) where the conjunction "and" is used. This use of the conjunctive word makes the perfect sentence structuring and rhythm whereas the use of the words "finally", "as long as" and "only" did not have any meaningful connection in joining the two sentences.

Thus the correct answer is option B.

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