What describes the quality of having a soft and rounded form?

The correct answer, which describes the quality of having a soft and rounded form, is "chubby." This term characterizes something that is plump or slightly overweight, suggesting a softness and roundness in its shape. In contexts like describing a person or an object, "chubby" often conveys a sense of endearment or warmth associated with its roundness.

The other options do not relate to the description of a soft and rounded form. "Impeccable" refers to something flawless or without errors, "immaculate" indicates cleanliness or purity, and "oppose" means to resist or stand against something, none of which convey any characteristics associated with softness or roundness. Understanding these distinctions helps clarify why "chubby" is the most appropriate choice in this context.