Antonym means the opposite of the word. 'Orderly' which is italicized means something that is organized and tidy. Opposite of orderly will be 'turmoil', which is option C. 'Turmoil' means 'chaos' or 'disorder'. Option A 'Filth' means 'dirty', Option B 'awkwardness' means 'discomfort' and Option D ‘rummage' means 'to search for something by moving things here and there'. Hence 'turmoil' is the only fit as the antonym of ‘orderly’ which is option C.