The element(s) that are excreted through human sweat is/are

Correct answer: (e) None of the above/More than one of the above

Explanation

Sweat is mostly water, with dissolved salts and minerals, urea and lactic acid. Along with sodium, potassium and chloride, it carries small amounts of sulphur, iron, magnesium and zinc.

Since all four elements given are lost in sweat, the answer is "More than one of the above".