Final answer:
To avoid pulling the nasal septum, a practitioner should use mandibular suture closure, as it sutures the jaw directly without external pressure on the nose.
Step-by-step explanation:
To avoid a pull of the nasal septum during mouth closure in a deceased individual, the practitioner should use a mandibular suture closure. This method includes suturing the mandible to the maxilla without external pressure that might distort nasal cartilage. The needle injector closure and wire splint closure methods both involve puncturing the bone or using wires that might exert undue force on the nasal septum. On the other hand, an eyecap closure is primarily used for keeping the eyes closed and does not pertain to the mouth closure. The mandibular suture closure ensures that the nasal septum remains undisturbed while securing the mouth closed in a respectful and professional manner.