All listed methods are important for documenting a crime scene, but they serve different primary purposes.
Step 1: Evaluate the purpose of each method.
(1) Photography: Captures the visual appearance of the scene and evidence with realism ("fair and accurate representation"). However, it doesn't easily convey exact measurements or composite views.
(2) Videography: Provides a dynamic walkthrough of the scene, showing relationships between items in a fluid manner.
(3) & (4) Sketching: A crime scene sketch is a measured drawing that documents the location of evidence items in relation to each other and to fixed points in the scene. Its primary purpose is to record the precise "size and distance" and spatial relationships. It complements photographs by providing a clear, uncluttered map with exact measurements.
Conclusion: While photography is essential, the crime scene sketch is the specific tool designed to create a permanent, accurate record of sizes and distances for later reconstruction.