The correct answer is D) fallen leaves and blossoms spread out from its borders.
The sentence that best continues the description above is “fallen leaves and blossoms spread out from its borders.
The passage says that “the garden was untended”, which means that nobody look after it. Nobody takes care of it. Then, “overgrown with weeds and dying plants”. That means that the garden urgently needed water, the plants were dying and the grass needed to be cut. That garden is a mess. That is why the sentence that best continues the description above is “fallen leaves and blossoms spread out from its borders.