Which of the following interventions should the nurse include in the client's plan of care?

The correct answer is A: Obtain IV access. This intervention is crucial for administering medications, fluids, and emergency treatments. It allows for quick access in case of a medical emergency. Keeping a padded tongue blade (B) is not a standard nursing intervention and can pose a risk of choking. Keeping the lights on (C) can disrupt the client's sleep and hinder the healing process. Placing the bed in a high position (D) does not directly impact the client's care plan and may not be necessary unless specified for medical reasons.