Final answer:
Plectranthus mummularis is best identified as Swedish Ivy, a common houseplant with a trailing growth habit.
Step-by-step explanation:
Plectranthus mummularis, given the options A) Creeping Charlie B) Swedish Ivy C) African Violet D) Coleus, is best identified as Swedish Ivy. This species is known for its trailing growth habit and is commonly grown as a houseplant due to its attractive foliage and ease of care. It should not be confused with African Violet or Coleus, both of which have different leaf structures and growth habits. Creeping Charlie is a common name for another species, Plectranthus verticillatus, which is sometimes confused with Swedish Ivy due to their similar appearance.