C4 plants are the plants that utilize the Hatch-Slack pathway or C4 carbon fixation type of photosynthesis process in which carbon dioxide into 4 carbon sugar to move to the Calvin cycle.
These plants are present more commonly in dry and hot climates such as deserts due to their ability to the fixed carbon at a low concentration of carbon dioxide and produce more energy when stomata are closed. Corn, pineapple sugarcane and many more are examples of the C4 plants.
I would say A) Short-term. Unless the earthquake is extremely powerful it would not be classified in the other three categories, so most earthquakes would be short-term
Explanation: A stream terrace basically forms through this process– Temporary base level is eliminated; the stream downcuts upstream from the old temporary base level, and the former floodplain is left well above the present elevation of the stream.