Which establishes and maintains the MOST formal style?

A)In 1998, community gardens got started. This was good for environment. Good neighbors. Healthy food.
B)In 1998 communities got gardens. Good for environment. Good for the neighbors. Healthy food for everyone.
C)Community gardens began in 1998, so lots of people don't have to worry about getting good, healthy stuff to eat.
D)Community gardens began in 1998, which resulted in a positive environmental impact on neighborhoods across the nation.

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.

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