Which sentence uses correct punctuation? many countries are making progress to solve environmental problems, however, there is more to be done. many countries are making progress to solve environmental problems; however, there is more to be done. many countries are making progress to solve environmental problems, however there is more to be done. many countries are making progress to solve environmental problems, however; there is more to be done.

Answers

Many countries are making progress to solve environmental problems, however, there is more to be done. 
B is the correct answer
Answer is B)
Many countries are making progress to solve environmental problems; however, there is more to be done.

When using however in the middle of a sentence, we use a semicolon, followed by however, followed by a comma. This helps to separate the two clauses while still connected the ideas. 


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