The word "small" most nearly means "little." Here option C is correct.
While "small" and "little" are often used interchangeably, they both convey a similar idea of size or magnitude that is not large. When describing objects, quantities, or dimensions, "little" can be used as a synonym for "small." It refers to something that is diminutive in size or extent.
Options (a) "cheap," (b) "sturdy," and (d) "round" do not directly capture the concept of size, and they represent different attributes.
"Cheap" relates to cost, "sturdy" to strength and durability, and "round" to shape. Therefore, in the context of size, "little" is the most appropriate synonym for "small" among the given options. Here option C is correct.