Correct Answer - Option 1 : 34% to 37%
The correct answer is option 1
- Seawater, or salt water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/l, 35 ppt, 600 mM). This means that every kilogram (roughly one liter by volume) of seawater has approximately 35 grams (1.2 oz) of dissolved salts
- 34% to 37% is the correct average range of worldwide variations in sea water salinity
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This uniformity of salt content results in oceans in which the salinity varies little over space or time. The range of salinity observed in the open ocean is from 33 to 37 grams of salt per kilogram of seawater or psu.
Therefore, the correct answer is 34% to 37%
