Intense and extreme are synonyms so the answer is D
it means "guilty of or involving betrayal or deception." or "(of ground, water, conditions, etc.) hazardous because of presenting hidden or unpredictable dangers."
The buildings has been built to withstand heavy winds.
Bias is where someone gives there opinion. Like if someone said that they thought xboxes were cooler than PlayStations
I think is going to be A historian for the web site of Sioux tribe of Montana. I hope this is correct.
