Answer:
B chart
Step-by-step explanation:
Fareed is writing an informational essay on the effects of smong on urban tree growth over the past 10 years he has found large amounts of data in his research.
The new addition he could make to his essay that would help his readers to better understand the information is to use a chart.
This is because a chart would represent how the smong has affected the trees over a ten year period and would enable his audience understand better.