Answer:
In complete aseptic handwashing, the first area to be cleaned is typically the **palms** (option d).
Explanation:
Proper handwashing technique often starts by thoroughly cleaning the palms, and then the process involves cleaning the other areas mentioned in options a, b, and c, including under the nails, thumb and fingers, and the webbing between fingers. However, it's essential to follow specific handwashing guidelines provided by healthcare institutions or authorities for the most accurate and effective procedures.