Skin tags are best described as:

Skin tags are best described as small benign outgrowths of skin, which means they are non-cancerous and generally harmless. These growths typically appear as soft, raised bumps on the skin and can vary in color, size, and shape. They often occur in areas where skin rubs against skin, such as the neck, armpits, and groin.

Being benign is an important characteristic of skin tags, distinguishing them from malignant growths, which are cancerous (as mentioned in one of the choices). Their soft and flexible nature, as well as their common appearance on friction-prone areas, further highlights their benign nature.

Unlike warts, which are caused by viral infections, skin tags do not have a viral etiology. Additionally, they do not resemble cauliflower-like growths, which are often associated with specific skin conditions such as human papillomavirus infections. Hence, identifying skin tags as benign outgrowths effectively captures their essential nature.