The gap in the ozone hole over the North Pole can expand each summer enough that it exposes regions as far south as Sweden by heightened UV radiation, also increasing rates of skin cancer in the northern regions by as much as 50 percent.
A. that it exposes regions as far south as Sweden by heightened UV radiation, also increasing.....also increasing?? I don't know why this is wrong. ||ism?
B. that regions as far south as Sweden have been exposed to heightened UV radiation, as well as having increased.......prsent perfect for expose is not correct here.
C. to expose regions as far south as Sweden to heightened UV radiation, increased.......Increased---modifies what?
D. to expose regions as far south as Sweden to heightened UV radiation and increase....looks good
E. that exposure to heightened UV radiation in regions as far south as Sweden, as well as increasing........as well as increasing? same as A. ||ism?
correct answer seems D.
correct me if I am wrong and advice.