Which direction does air flow within a cyclone?
a. air rises.
b. air sinks.
c. air flows laterally.
d. air does not move in a cyclone.

The movement of air flows laterally within the cyclone. The lateral movement is based on the difference of air densities such as cold and warm fronts. Cold fronts moves from west to east and warm fronts moves fromnorth to south ahead the cyclone.

a characteristic is a deep cut in the earth or left over rock aka till.  

the answer is the last option or letter d)