The answer is : a region with an unusual concentration of dark energy. A region whose dark matter density was higher than average, because gravitational runaway takes regions that are initially denser and makes them the more denser.
Answer:
I think no. D (Satellites)
Examples of what to clean seasonally
In bedrooms: vacuuming mattresses, cleaning out the closet and dressers
In kitchen: deep cleaning the fridge and freezer
living room: cleaning the windows inside and out, clean out fireplace and chimney
Bathroom: Apply tile and grout cleaner