Answer:
D.
is one of the hardest workers he has ever seen
Explanation:
This is an excerpt from <em>Into the Wild</em>, “I’ve given jobs to lots of hitchhikers over the years, ' says Westerberg. 'most of them weren’t much good, didn’t really want to work. It was a different story with Alex. <em>He was the hardest worker I’ve ever seen."</em>
For the first one the correct answer is variant A because of the appositive developed phrase ' <span>grown in many parts of the world ' .
For the second one the correct answer is variant B because that sentence doesn't need any comma's like the other ones.</span>
