Which ant can be identified as one of the smallest and feeds on greasy foods?

Thief ants are recognized as one of the smallest ant species and are particularly known for their tendency to feed on greasy foods, including fats and oils. This feeding habit is distinctive among ants, as many other species have a more diverse diet that includes sugars and proteins. Thief ants are often brown to yellow in color and are typically smaller than other common ant species. Their preference for greasy substances is tied to their nutritional needs, making them effective scavengers in environments where such foods are available.

In contrast, the other options do not align with the description given. Red Imported Fire Ants, while notable, are larger and do not have the same dietary preferences. Carpenter Bees are not ants at all; they are a type of bee. Bumble Bees, like carpenter bees, are also bees and do not exhibit the same feeding behaviors as Thief ants, focusing instead on nectar and pollen. This distinction in size and diet helps to clearly identify Thief ants as the correct answer to the question.