According to the passage, the first settlers used wood for their utensils and tools because it was ______.

C
解析：注意题干上的信号词utensils and tools，以此为目标可以很容易地找到本题的依据句“Because of the lack of other materials，early settlers were forced to make tools and utensils out of wood.”选择C的原因在于当时十分缺乏其他材料而木材到处都有所以得到采用。available意思为“有，存在”。