According to the WHO, primary care is defined as:

The definition of primary care according to the World Health Organization (WHO) focuses on the principles of being affordable, accessible, and practical for the population. Primary care serves as the foundational level of healthcare delivery, emphasizing comprehensive and continuous care that is typically the first point of contact for individuals seeking medical attention.

This type of care encompasses a wide range of services, including prevention, wellness, and the treatment of common illnesses and conditions. It is designed to be accessible to all individuals, regardless of their socioeconomic status, ensuring that essential health services are within reach. By emphasizing practical healthcare solutions, primary care aims to address the needs of the population effectively and efficiently, improving overall public health outcomes.

The other options do not align with this definition of primary care. Specialized medical care refers to healthcare services provided by experts in specific areas, which is not the focus of primary care. Exclusive advanced treatments suggest a more narrow scope of care that is not applicable to the broad range of services covered under primary care. Lastly, limiting the definition to emergency services fails to capture the preventive and routine aspects of healthcare that are integral to primary care. Thus, the emphasis on affordability, accessibility, and practicality distinctly characterizes primary care in alignment with WHO guidelines.