Final answer:
Avocado is identified as a fruit on the Clean 15 list, which is known for low levels of pesticide residues after washing, in comparison to the Dirty Dozen list that indicates higher residue levels.
Step-by-step explanation:
The Clean 15 is a list compiled by the Environmental Working Group (EWG) that ranks fruits and vegetables based on the lowest levels of pesticide residues after washing. From the options provided to describe the items on the Clean 15 list, avocado stands out as a fruit typically included in this category. Avocados are known to have a thick skin that protects the inner fruit from pesticide exposure, making them less likely to contain high levels of residues. In contrast, fruits like strawberries appear on the EWG's Dirty Dozen list, which highlights produce with higher pesticide residue levels, influencing consumer behavior towards purchasing organic varieties.