Final answer:
Nursing centers offer 24-hour nursing care for elderly individuals who require constant attention due to health conditions or disabilities. This decision is influenced by cultural views and the financial capability of the family.
Step-by-step explanation:
In the context of providing care for the elderly in the United States, the type of facility that offers 24-hour nursing care is C. nursing centers. Board and care homes, assisted living residences, and residential care facilities may offer varying levels of support and assistance, but nursing centers are specifically designed to provide comprehensive around-the-clock medical and personal care for those who require constant attention due to health conditions or disabilities. The decision to place an elderly family member in such a facility can be difficult, with cultural and financial factors greatly influencing the choice.