Research participants who were asked to choose the most attractive face between two pictures later failed to recognize that their choice had been switched with a different photo. This is an example of which type of inattentional blindness?

Change blindness is a perceptual phenomenon that occurs when a change in a visual stimulus is introduced and the observer does not notice it. For example, observers often fail to notice major differences introduced into an image while it flickers off and on again. People's poor ability to detect changes has been argued to reflect fundamental limitations of human attention.

Explanation:

they all focused on themes about the inevitability of death.

because he is that the right