A nurse is reviewing the laboratory results of a client and finds both their iron and vitamin B12 levels are below the expected reference range. The nurse should monitor the client for which of the following conditions?

A) Rolls from back to abdomen: Rolling from back to abdomen is a typical developmental milestone for a 4-month-old infant. By this age, infants usually have increased muscle strength and coordination, allowing them to start rolling over. This movement helps build their core strength, which is important for later developmental milestones like sitting up and crawling.

B) Moves objects to mouth: It is common for a 4-month-old to move objects to their mouth as they begin exploring the world around them. This action is a key part of sensory development and helps infants develop their hand-to-mouth coordination. Additionally, this behavior assists in teething and the development of oral motor skills.

C) Anterior fontanel closed: The anterior fontanel normally closes between 12 to 18 months of age. If it is closed at 4 months, it may suggest abnormal cranial growth, such as craniosynostosis, where the sutures of the skull close too early. This could lead to increased pressure on the brain, which can cause developmental delays or other complications, so the provider should be notified for further assessment.

D) Posterior fontanel closed: The posterior fontanel typically closes by 2 to 3 months of age. If it is closed by 4 months, it is completely normal and indicates proper cranial development. The closing of the posterior fontanel helps ensure the skull's bones are fusing together as expected, and it does not raise any concerns at this stage.

A) I participate in physical activities 3 times per week: Engaging in physical activity is a positive behavior and is not considered high-risk. Regular physical activity is important for maintaining overall health and preventing obesity, cardiovascular disease, and other health issues.

B) I use sunscreen with an SPF of 10: While using sunscreen is a protective behavior, an SPF of 10 is lower than the recommended SPF of at least 30 for effective protection against harmful UV radiation. This is not the most significant high-risk behavior compared to others, but it still indicates some risk of sun damage.

C) I limit playing video games to 3 hours per day: Limiting screen time to 3 hours per day can be considered a balanced approach to video gaming. While excessive screen time can be problematic, 3 hours per day is not necessarily a high-risk behavior for an adolescent, as long as it doesn't interfere with other important aspects of life, like physical activity, sleep, and socialization.

D) I have had sexual relations, but did not get the HPV vaccine: Engaging in sexual activity without receiving the HPV vaccine is a high-risk behavior. The HPV vaccine helps prevent certain strains of the human papillomavirus, which can cause cervical cancer and other cancers. Lack of vaccination increases the risk of contracting HPV and developing related complications.