Which type of epithelial cells are specifically adapted for absorption?

Columnar cells are specifically adapted for absorption primarily due to their structure and function. These cells are taller than they are wide, which provides a larger surface area for the absorption of nutrients. They are commonly found in areas of the body that are involved in the absorption processes, such as the intestines.

The microvilli that often cover the surface of columnar epithelial cells further increase the area available for absorption, allowing for more effective nutrient uptake. Additionally, these cells are typically involved in secretion as well, producing mucus and digestive enzymes which aid in the absorption process, particularly in the digestive tract.

This combination of increased surface area due to cell shape and the presence of microvilli makes columnar cells particularly effective in their role in absorption, hence their designation as the correct answer in this context.