Because they were CARELESS and forgot to close the window when it rained, there is a puddle on the floor. PLEASE HELP !!

Choose the CAPITALIZED word in the entry below that best replaces "careless" in the sentence above.

careless adj. 1. taking chances: The bike riders were careless, often ignoring the rules of the road, RECKLESS 2. not taking care of things: They are careless with their car, and never change the oil NEGLECTFUL 3. not worried Emmett gave a careless laugh when he realized he forgot to do his homework UNCONCERNED 4. not exact: The careless trimming of the shrubs caused them to look uneven. INACCURATE