Although Manuel was sitting right next to his parents, he smelled a skunk minutes before they did. Apparently, Manuel has a lower __ for skunk odor than his parents have. accommodation level olfactory saturation level tolerance level absolute threshold

## Step 1<br />The problem is about the sensitivity of the human olfactory system, which is responsible for the sense of smell. The options provided are related to the terms used in the study of sensory systems and perception.<br /><br />## Step 2<br />The term 'accommodation level' is not related to the sense of smell. It is a term used in the context of vision, referring to the ability of the eye's lens to change shape to focus on objects at different distances.<br /><br />## Step 3<br />The term 'olfactory saturation level' is not a standard term used in the study of olfaction (sense of smell). Olfactory saturation refers to the maximum capacity of the olfactory system to detect odors, but this term is not commonly used in this context.<br /><br />## Step 4<br />The term 'tolerance level' is the most appropriate choice in this context. Tolerance level refers to an individual's ability to withstand or endure a particular stimulus, in this case, the odor of a skunk. Manuel's ability to smell the skunk before his parents suggests that he has a higher sensitivity or tolerance for skunk odor compared to his parents.<br /><br />## Step 5<br />The term 'absolute threshold' is the minimum intensity of a stimulus that must be present for the stimulus to be detected. In the context of smell, it refers to the lowest concentration of an odor that a person can detect. While Manuel's situation could involve his absolute threshold for skunk odor, the phrase 'lower __ for skunk odor' implies a comparison between Manuel and his parents, making 'tolerance level' a more suitable choice.