The central proposition remains Zayd is present. The formulation varies with the audience’s state.
AudiencePossible expression
Uncommittedزَيْدٌ حَاضِرٌ
Hesitantإِنَّ زَيْدًا حَاضِرٌ
Strongly denyingوَاللَّهِ إِنَّ زَيْدًا لَحَاضِرٌ
These are teaching illustrations. The same judgment is expressed with increasing reinforcement. Correct analysis asks not just which markers occur, but for whom each form is fitting, and why.