A) This is easily solved by going back up to shallower waters. B) Beca
A) This is easily solved by going back up to shallower waters.
B) Because of the nitrogen in the compressed air, divers need to be very careful when diving to greater depths, as nitrogen narcosis can occur, which has the same effect as excessive alcohol.
C) The air that is in the tanks is compressed air, so it is parts of nitrogen, parts of oxygen, and some other gases as well.
D) SCUBA is an abbreviation for Self Contained Underwater Breathing Apparatus, in other words, equipment to allow us to breathe underwater.
Right Answer is: A
The first sentence should be D as it introduces the subject of the passage i.e. ‘scuba diving’. The second sentence should be C as it tells about the apparatus as mentioned in sentence D. The third sentence should be B as it tells about the nitrogen in the compressed air which is mentioned in sentence C. The sentence A aptly concludes the passage by telling what can be done if nitrogen narcosis occurs.
Hence, option A i.e. DCBA is the correct answer.