Final answer:
The basic airway opening technique is performed to ensure a clear passage for air to enter and exit the lungs. If there is a suspected neck injury, caution should be taken to avoid excessive movement of the neck.
Step-by-step explanation:
The basic airway opening technique is performed to ensure a clear passage for air to enter and exit the lungs. This can be done by positioning the patient's head in a neutral position, and gently tilting the chin upwards to lift the jaw. If there is a suspected neck injury, it is important to use caution while performing the airway opening technique. In such cases, the head and neck should be immobilized in a neutral position using manual stabilization or a cervical collar, while avoiding excessive movement or manipulation of the neck.