The downslope winds flowing from high elevations of mountains, plateaus, and hills down their slopes to the valleys or planes below are known as:

Correct option is A

Correct Answer: A). Katabatic winds

Explanation:
Katabatic winds are downslope winds that flow from high elevations (mountains, plateaus, or hills) down their slopes to valleys or plains due to gravity. These winds occur when cool, dense air descends under the influence of gravity, often leading to strong gusts.

Information Booster:
Katabatic winds are common in Antarctica, Greenland, and mountainous regions.
Examples include Mistral (France), Bora (Adriatic coast), and Santa Ana (California, USA).
They are opposite to Anabatic winds, which flow upslope.

Additional Information:
 Samoon winds –  these are hot, dry desert winds in Iran and the Arabian Peninsula.
 Anabatic winds –  these are upslope winds caused by warm air rising during the day, opposite of Katabatic winds.
 Shamal winds –  these are northwesterly winds in the Persian Gulf region, bringing dust storms.