<span>a tall fern with coarse lobed fronds that occurs worldwide and can cover large areas. It is a fern
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A is correct.
B's mistake is hard to see, but it is there.
C has no punctuation where it's needed.
D sounds like this: "This shovel is old and rusty it is good enough. However, for the little bit of gardening we do." It sounds rushed in the beginning and the mark doesn't help.
I would go with option choice B. Good deeds are always rewarded.
Use care with secondary clauses. Use active voice. Use powerful verbs. Follow grammar rules