Act of guardian giving consent on behalf of a child for his benefit in good faith below ________ years is___________:

S. 89. Act done in good faith for benefit of child or insane person, by or by consent of guardian.— Nothing which is done in good faith for the benefit of a person under twelve years of age , or of unsound mind, by or by consent, either express or implied, of the guardian or other person having lawful charge of that person, is an offence by reason of any harm which it may cause, or be intended by the doer to cause or be known by the doer to be likely to cause to that person: