I am not completely sure, there may be different answers to this question:
Canadian Shield is not suitable for farmland, because it is very rocky.
Great Plains haven't been suitable in the past, because the land is very dry.
Greenland is covered in ice, although there are many places where farming is very successful.
Yucatan Peninsula is more or less a swamp today, but farming is possible.
Answer: Option 4: C
The layer all the way to the bottom is the oldest which is D but D isn’t an option so C is the oldest layer.
<span>Under a unitary type of government, there is one central government. This type of government provides citizens with the right to vote on issues within their state and within the country. Local citizens can also become involved in local politics and hold offices in city, county and even state positions.</span>
