Fill in the blank with one of the words given below. Change the form where necessary.‎
‍coincidence‎
‍profile‎
‍subordinate‎
‍attempt‎
‍nomination‎
distinction   ‎
‍categorize‎
‍manipulate‎
‍inferior‎
‍maximize‎
‍‎
‍They did a lot to ___________ efficiency. ‎