The last one is correct.
<span>We will plant some vegetables (broccoli, cauliflower, and brussels sprout) in our fall garden.
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I believe the answer is c also
The answer is B because it puts a coma in the correct spot to pause between the first half of the sentence and the second. The others either randomly placed a period, using the wrong word choices, or made it a run on sentence. :)
It could be B but i'm not sure...