Which of the following correctly use conjunctions and punctuation? Check all that apply. China’s government promised to end the policy in 2010, for the unemployment problem and food scarcity crisis were predicted to be over by this time. China’s government promised to end the policy in 2010 the unemployment problem and food scarcity crisis were predicted to be over by this time. China’s government promised to end the policy in 2010 when the unemployment problem and food scarcity crisis were predicted to be over. China’s government promised to end the policy in 2010 because the unemployment problem and food scarcity crisis were predicted to be over by this time.