Although most people speak at a rate of 120 to 150 words a minute, the brain can process words at a rate of:

1) d

2)c

3)b

4) a

5)c

6) c

by using  production possibilities graph.  opportunity costs are key expenses in financial matters and are utilized as a part of registering money saving advantage investigation of a venture. such expenses, be that as it may, are not recorded in the record books but rather are perceived in basic leadership by processing the money costs and their subsequent benefit or misfortune.