My sister left me a wonderfull note : Hey sis!What do you think about a large coffee when we wake up and then clean up the place?So got up , drank a mug and cleaned the whole place . 2 hours later it 's spotless again ! ! ! ! So after I went out to do a bit of shopping .

Question: Why did the sister want to clean the house ?
Answer: Her hobby was cleaning others ' houses .She loved her sister and wanted to clean .None of the above choices .She like to clean as an activity .