Alex is at a rock concert. when his ears send a signal to his brain that he has heard a sound, this process is most accurately called but when he recognizes that the sound is his favorite song, this process is most accurately called

Alex is at rock concert. is most accurately called SENSATION. But is most accurately called PERCEPTION.
Sensation occurs when light waves enter the sense organs and get converted to electrical impulses. The sense organs involve in this case are the senses of touch, sight, smell, hearing and taste. Perception occurs when the brain send signals to the body which result in identification or recognition of the sensation.

Well let's uhmmm how many bedrooms you want. if you want a garage. not to mention the price of the house?