Which of these best describes an opportunity cost? O a win-win
O a loss
a chance
a trade-off

Opportunity cost is used to describe the value that is given up by choosing an alternative option when faced with choices. An opportunity cost does not necessarily need to be monetary and may describe a sense of loss when forgoing a particular option.

Explanation:

workers of lowell mills were greatly benefited for the waltham type of work which was more a paternalist kind, trying to protect the integrity of this little girls coming from small farmers and providing an adequate place of work, this in an effort to avoid the issues of bad place conditions and immorality that the people in bigger industrialized cities of great britain were experimenting.

doat means to cherish based on the key word fancying and that it is a living thing