Which of the following nursing interventions would be appropriate?

A male patient who had surgery 2 days ago for head and neck cancer is about to make his first attempt to ambulate outside his room. The nurse notes that he is steady on his feet and that his vision was unaffected by the surgery.
1. Encourage the patient to walk in the hall alone
2. Discourage the patient from walking in the hall for a few more days
3. Accompany the patient for his walk.
4. Consuit a physical therapist before allowing the patient to ambulate