Since when does curiosity begin to lessen in intensity and extent but improve in quality

A．Inadequate medical care.
B．Continuing social unrest.
C．Lack of food, water and shelter.
D．Rapid spreading of the epidemic.

A．Tony always speaks too fast.
B．Tony’s speech is always not clear.
C．Tony always doesn’t come to the point.
D．Tony always speaks with strong accent.