Final answer:
Estheticians should be able to interpret the effects of genetics, diet, and climate on skin health and appearance.
Step-by-step explanation:
Estheticians should be able to interpret the effects of all of the above factors that influence skin health and appearance, including genetics, diet, and climate. Genetic factors can determine skin characteristics such as color and sensitivity. Diet plays a role in providing essential nutrients for healthy skin, and climate conditions like UV exposure can impact skin health. Therefore, estheticians should consider all these factors when assessing and addressing skin concerns.