Concept:
Tessellation is the process of partitioning geographic space into a set of contiguous, non-overlapping cells that completely cover the study area.
Examples include square grids, triangular meshes, and hexagonal grids.
Step 1: Understand tessellation.
A tessellation
• Covers the entire region.
• Has no gaps.
• Has no overlaps.
Step 2: Identify the correct definition.
Hence,
\[
\boxed{\text{Tessellation divides space into non-overlapping cells covering the entire study area}.}
\]
Therefore, the correct option is
\[
\boxed{(C).}
\]