Selective attention is

Selective attention is

• A. Light entering the eye
• B. Focusing on one stimulus
• C. Brain function
• D. Missing visible objects

Answer: (B)

Selective attention is the process of focusing cognitive resources on a single stimulus while filtering out competing information. This is exactly what the option describing focusing on one stimulus captures: you direct your attention to one thing and ignore others, allowing for clearer perception and processing of that stimulus. The other ideas are not about the act of choosing what to attend to: light entering the eye is sensory input, not the act of focusing attention; brain function is a broad description of neural activity without specifying selective focus; missing visible objects describes a consequence of attention lapses (inattentional phenomena) rather than the act of selecting one stimulus.

Selective attention is the process of focusing cognitive resources on a single stimulus while filtering out competing information. This is exactly what the option describing focusing on one stimulus captures: you direct your attention to one thing and ignore others, allowing for clearer perception and processing of that stimulus. The other ideas are not about the act of choosing what to attend to: light entering the eye is sensory input, not the act of focusing attention; brain function is a broad description of neural activity without specifying selective focus; missing visible objects describes a consequence of attention lapses (inattentional phenomena) rather than the act of selecting one stimulus.