If industrial pollution continues to deplete the ozone layer, the resulting increase in ultraviolet radiation will endanger human health, causing a rise in the incidence of skin cancer and eye disease, and perhaps even threatening global ecological systems.
(A) and perhaps even threatening
(B) and may even threaten
(C) and even a possible threat to
(D) as well as possibly threatening
(E) as well as a possible threat to
a
a
A..
a
Why not B
GMAT team can you please provide an answer?
A is wrong…because threatening is wrong usage here…I go with B
B
B
B
B
The Site takegmat would be even better if answer were provided along with explanations.
I will go with option B
I will go with B as well increase …. rise … threaten…
a
A
“Perhaps even threatening” is not in parallelism with the first part of the sentence. The first part says “endanger human health.” So the second part should be “and may even threaten.”
Answer (B).