England's policy of salutary neglect between 1721-1742 allowed the colonies to
a. decrease in size
c. lose interest in trade
b. reduce their agricultural output
d. govern themselves

England's policy of salutary neglect between 1721 and 1742 allowed colonies to govern themselves. the correct option among all the options that are given in the question is the fourth option or option "d". This was the policy that avoided the strict implementation of parliamentary laws. I hope the answer has helped you.