Which factor can affect the accuracy of eyewitness testimony?

Eyewitness testimony can be significantly influenced by the limitations of human perception and memory, which is accurately highlighted by the choice that states eyewitnesses may not see all aspects of a given incident. This means that during an event, a witness might focus on certain details while missing others entirely. Factors such as stress, distractions, and the time available to observe can all contribute to incomplete or distorted memories.

Memory does not function like a video recording; instead, it is reconstructed based on various elements, including prior knowledge and expectations. As a result, an eyewitness's recollection can include gaps where they simply did not perceive certain details or misinterpret what they did see, leading to inaccuracies in their account. This inherent limitation in perception underscores the reliability issues often associated with eyewitness testimony in legal settings.

While the other statements deal with aspects of confidence or recollection, they do not capture the fundamental challenge of variable observation and memory perception as clearly as the correct choice does.