In this question, there are no options provided. I would try and answer this question from my knowledge and hope it helps you. High erosion rates in Madagascar are caused primarily by slash and burn treatment of forests. This leads to the upper soil becoming very loose and they get eroded very easily. This leads to unfavorable condition for farming.
C! is your correct answer!
Answer: I would say region
Explanation: The definition for region is an area having definable characteristics but not always fixed boundaries.
That's the definition of "free fall".
We can never observe free-fall in our daily life on Earth. There's always
at least one other force besides gravity acting on a falling body, because
it's always falling through air.