What details? You didn't provide a picture or anything.
Answer:
Correct option is D: Community gardens began in 1998, which resulted in a positive environmental impact on neighborhoods across the nation.
Explanation:
The most format style of a sentences is shown in option D because it provides great meaning without too much full-stops and avoid parallel errors. In option A and B, there are too many stops and almost meaningless phrases standing alone. Option C would have been a good option, but using "so" after the comma and "worry about getting good" and "healthy stuff to eat" makes it informal.
They support them beacuse when they need omething for trade they demand the trade for a another trade in \\
The main idea doesn't explain in detail why it is the main idea. It doesn't prove that it is the main idea, it only states so.
