Which of the Following Scenarios Is an Example of Latency

Which of the following scenarios is an example of latency?

A) As her memory ages, Josephine can't remember her doctor appointments.
B) As his reflexes get slower, Frank doesn't drive as often.
C) As her osteoporosis worsens, Pauline doesn't exercise as often at the local gym.
D) As his cataracts worsen, Paul purchases large-print novels to read.