Answer:
c. Mohs surgery
Explanation:
Mohs surgery is a method to treat various types of skin cancer. Layers of tissue are removed in the process. Each layer is examined for cancerous cells. After evaluation it is decided whether the next layer should be removed or not. It has been used successfully to treat basal carcinoma which is the most common type of skin cancer. It is also used to treat other skin cancers like squamous cell carcinoma, sebaceous carcinoma, merkel cell carcinoma etc. The cancerous tissue is removed with high precision, not harming the normal tissue.
