Answer:
The correct answer is A: Simple cuboidal epithelium.
Step-by-step explanation:
Simple Cuboidal Epithelium: These epithelia are formed by a single layer of cuboidal cells, that are as tall as they are wide. They have a rounded, central nucleus. Occasionally these cells present cilia, flagella or microvillus in their apical surface, lining the lumen. Microvillus are fingerlike projections. This epithelium can be found for example in the proximal convolutes renal tubule.