Which of the following expressions is equivalent to the expression d+d+d+d?

What effect did the enclosure acts have on people’s working lives? a. changes brought about by the acts prevented large farmers from taking lands from smaller farmers. b. small farmers could no longer work on common lands and had to move to cities for work. c. peasants started working on enclosed lands and soon became wealthy because of higher wages. d. landowners forced peasants to build roads and bridges as part of the new enclosure laws.