Directions: for these questions, you will consider how the passage might be revised to improve the expression of ideas or to correct the errors in sentence structure, usage, or punctuation. some questions will direct you to an underlined portion of the passage or a location in the passage. others will ask you to think about the passage as a whole. many questions include a “no change” option. choose that option if you think the best choice is to leave the relevant portion of the passage as it is. more than half a decade after the magnitude 7.0 earthquake that leveled haiti, serious public health and social problems tolerate. these include inadequate housing, political corruption, and the spread of cholera. a) no change b) pursue c) persist d) keep going