Rickets develops in growing children who are not exposed to sunlight and, therefore, have a deficiency of

halogen, any of the six nonmetallic elements that constitute group 17 (group viia) of the periodic table. the halogen elements are fluorine (f), chlorine (cl), bromine (br), iodine (i), astatine (at), and tennessine (ts).

option a and d is the correct answer

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