"C", "Maybe".
The credibility depends on the websites contents and credentials.
A website like a government's page is considered, "credible", because it is from a trusted source; the government. Whereas getting a random answer from Yahoo is considered less credible because of it not stemming from a trustable source.
Hey, it's TeenSuicide.
Answer:
In many areas of the Andes, farmers, communities, and the Inca state constructed agricultural terraces (andenes) to increase the amount of arable land. Andenes also reduced the threat of freezes, increased exposure to sunlight, controlled erosion, and improved the absorption of water and aeration of the soil.
Explanation:
