A nurse is caring for four clients. The nurse should observe which of the following clients for a risk of vitamin B deficiency.

A. Vitamin D is crucial for bone health and immune function but is not primarily used to reduce the risk of birth defects.
B. Omega-3 fatty acids are important for various aspects of health but are not specifically recognized for reducing the risk of birth defects.
C. Lutein is an antioxidant that supports eye health but is not primarily used to reduce the risk of birth defects.
D. Folic acid, a B vitamin, is crucial in preventing neural tube defects in newborns when taken by pregnant women before and during pregnancy.

A. Orienting the patient to the location of the call bell and instructing on its use is crucial for patient safety and assistance, enabling them to call for help when needed.
B. Discussing the expected cost of the room per day may be important but is typically handled by the administrative or financial services staff, not part of the nursing orientation.
C. Shift change times are important for staff but are less pertinent to a patient's immediate needs and orientation to the unit.
D. While creating a comfortable and friendly atmosphere is important, addressing the patient informally by their first name should be done only if the patient expresses a preference for it; it's not part of standard orientation.