Read the passage, then answer the question that
follows.
The Nature Conservancy is very active in the
Adirondacks. They note that more roads are being built
in wilderness areas, where there is an abundance of
wildlife. This makes it more difficult for creatures to
travel, and more difficult to hunt. It is also causing an
increase in car accidents involving wildlife. Both animal
and human injuries are increasing. They are partnering with the New York State Department of Transportation to solve this problem. One potential solution is to use small overpasses as walkways for wildlife.

Which use of brackets would improve the clarity of the passage?
They (the Nature Conservancy] note that more
roads...
To use small overpasses (over busy roads] as
walkways...
This [the roads) makes it more difficult for creatures
to travel ...
They [the Nature Conservancy] are partnering with the New York State Department of Transportation