over
off
out
of
Answer is Right!
Answer is Wrong!
The correct answer is D. The CRPF men swung into action and cordoned off the area.
To cordon off an area means to surround it with a barrier, usually to prevent people from entering or leaving. This is often done in order to keep people safe, such as during a police operation or a natural disaster.
The other options are incorrect because they do not make sense in the context of the sentence. Option A, over, means to move something from one place to another, or to cover something with something else. Option B, off, means to stop something from happening, or to turn something off. Option C, out, means to move something from inside to outside, or to make something empty.