Effective communication supports collaborative relationships, continuous improvement in client safety, and:

Choice A rationale

Referral to a support group is a helpful nursing intervention that provides the client with external resources and peer encouragement. However, this is an example of providing a resource or acting as a facilitator rather than role modeling. Role modeling requires the nurse to personally demonstrate the desired behavior in their own actions to inspire the client. Simply providing information about a group does not display the nurse's personal commitment to the behavior.

Choice B rationale

Using a video is a form of audiovisual teaching that helps visual and auditory learners understand a procedure. While effective for showing the correct technique for incentive spirometry, it is a passive form of instruction. Role modeling involves a live, personal demonstration where the nurse serves as a behavioral example. A video features someone else, meaning the nurse is not modeling the behavior themselves but is instead using a technological tool to convey information.

Choice C rationale

Explaining steps while performing wound care is a classic example of a demonstration-return demonstration teaching strategy. This is highly effective for technical skills and psychomotor learning. However, role modeling is more about embodying a healthy habit or professional standard in everyday practice. While demonstration shows how to do a task, role modeling shows how to live or behave consistently. This specific action is categorized more as a direct clinical demonstration.

Choice D rationale

Role modeling occurs when the nurse consistently practices what they preach, thereby setting a standard for the client to follow. By washing hands every time they enter the room, the nurse demonstrates the importance of hand hygiene through personal consistency. This behavior reinforces the teaching without words, showing that the practice is a vital, non-negotiable part of health. It is the most direct application of role modeling in a clinical setting.

Choice A rationale

Hypertonic refers to the osmolarity or solute concentration of a solution compared to another, typically across a semi-permeable membrane. It describes a state where the concentration of solutes is higher than that of the intracellular fluid, causing water to move out of cells. While acid-base imbalances can occur alongside osmotic shifts, hypertonic does not describe the pH level of the blood. Normal blood osmolarity ranges from 275 to 295 milliosmoles per kilogram of water.

Choice B rationale

Acidotic describes a state where the blood pH falls below the normal range of 7.35 to 7.45. This occurs when there is an accumulation of hydrogen ions or a loss of bicarbonate bases. If the hydrogen ion concentration increases, the pH value decreases. Since the question describes a loss of hydrogen ions or a gain of bases, the resulting state would be the opposite of acidosis. Acidosis can lead to central nervous system depression and cardiac arrhythmias.

Choice C rationale

Alkaline, or alkalotic, describes a blood pH that has increased above the normal range of 7.35 to 7.45. This condition results from a decrease in the concentration of hydrogen ions or an excess of basic substances like bicarbonate. In chemistry, a higher pH value indicates a more basic or alkaline solution. This shift affects protein binding and electrolyte balance, particularly calcium and potassium, often leading to increased neuromuscular excitability, muscle twitching, or tetany in the patient.

Choice D rationale

Neutral refers to a pH of 7.0, where the concentration of hydrogen ions and hydroxide ions is equal. In the human body, a pH of 7.0 is actually considered acidotic because it is lower than the physiological normal range of 7.35 to 7.45. Human life is only compatible with a very narrow pH range; therefore, a gain of bases will push the pH toward the alkaline side of the spectrum rather than settling at the neutral point.