Multiple choices for this question have not been provided. I will however, go ahead and answer it.
Cognitive functions allow us to receive, select, transform, store, develop and recover info that we have received from external stimuli. Selective attention is a complex mental process of focusing on a particular object in an environment. Thus, the brain is able to pick and choose specific information to take in and specific information to ignore through selective attention. It is able to select between stimuli that reach our brain simultaneously, both through visual and audio.