Final answer:
The National Center for Health Statistics (NCHS), which is part of the HHS, developed the standard birth certificate for use across states.
Step-by-step explanation:
The government agency that developed a standard birth certificate to be adopted for use in each state is the National Center for Health Statistics (NCHS). The NCHS is part of the Centers for Disease Control and Prevention (CDC) and operates under the Department of Health and Human Services (HHS), which is a governmental agency focused on health and social services. The standard birth certificate they developed helps ensure consistency and completeness of birth data across the United States.