Final answer:
An acral rash would be found on the distal portion of a limb, referring to the extremities such as hands or feet.
Step-by-step explanation:
An acral rash refers to a rash that occurs on the extremities, particularly the distal portions of the limbs. Therefore, the correct answer is: a. Distal portion of limb. Examples of acral rashes can include skin conditions affecting the hands, fingers, feet, or toes. This term is often used to describe rashes that are localized to the outermost parts of the body, such as the hands and feet. Understanding the location of the rash is crucial for healthcare providers in diagnosing and treating skin conditions effectively. It allows for a more targeted assessment, considering the unique characteristics and possible causes of rashes in different anatomical regions.