What is a common issue with photographs in data collection?

• A. They can contain too much information, e.g. people and vehicles
• B. They require no labeling
• C. They are always in color
• D. They are always irrelevant

Answer: (A)

Photographs bring a lot of context with them, not just the thing you want to measure. This means images often contain more information than needed—faces, vehicles, signs, and background details—that can clutter analysis, complicate data processing, and raise privacy concerns. To make photos usable, researchers may need to crop, blur sensitive details, or label specific features, which adds time and potential bias to the process. That’s why this is a common issue: photos can overwhelm the exact data you’re trying to extract. The other statements aren’t generally true—photos aren’t always in color, they aren’t automatically irrelevant, and they usually do require some labeling or annotation to be useful.