A very elderly couple walk to the local senior center every Monday morning, when the center provides day-old baked goods from local stores to seniors free of charge. The spouses are very affectionate...

A very elderly couple walk to the local senior center every Monday morning, when the center provides day-old baked goods from local stores to seniors free of charge. The spouses are very affectionate and caring of each other, are dressed in clean, if worn, clothes, and are well groomed. However, both are severely underweight. Which of the following factors is most likely to be contributing to their underweight?

a. immobility

b. elder abuse or neglect

c. food insecurity

d. social isolation