Final answer:
Adipose tissue has the least amount of water because it is composed mainly of fat cells, unlike muscle, bone, and nervous tissue which have higher water content. The correct option is B.
Step-by-step explanation:
The type of tissue that has the least amount of water is adipose tissue. Adipose tissue, or body fat, is primarily used for storing energy in the form of lipids, while also serving as insulation and cushioning for the body's organs.
Unlike other tissues such as muscle, bone, and nervous tissue which contain higher percentages of water to support their functions, adipose tissue has a relatively lower water content as it is mainly composed of fat cells known as adipocytes.