Correct Answer & Explanation
Option A
For sentences giving moral guidance or advice containing 'Never':
• The reporting verb 'said to' is replaced by 'advised'.
• 'Never' is placed before the infinitive particle 'to' ('never to speak').
• Option B is ungrammatical due to double negation.
• Option C is incorrect because 'forbade' cannot be coupled with another negative word like 'never'.
• Option A is the correct indirect representation.