Which of the Following Is the Best Example of an Amenity

Which of the following is the best example of an amenity move after retirement,as described by Charles Longino?

A) When Mr. and Mrs. Lincoln could no longer drive themselves or perform routine household maintenance, they moved into an assisted-living community in the same town as their son.
B) After Mr. and Mrs. Ling retired, they moved into their daughter's home and became the primary caretakers of three small grandchildren while their daughter and her husband were employed full-time.
C) When Mr. and Mrs. Johnson retired, they wanted warmer weather and opportunities to be physically active throughout the year, so they moved to a retirement community in Texas.
D) Mrs. White entered a nursing home after she was released from the hospital, and she died three weeks later.