I think its soluble fiber will be the answer
Which is a size-dependent property?
A. boiling point
B. conductivity
C. density
D.Mass
I think letter D
Why?
A size dependent property is a physical property that changes when the size of an object changes.Examples of size dependent properties: Length, Width, Height, Volume, Mass.

The answer is A. Animals.
First of all humans and insects belong to the group of animals. There are about 1.6 million known species of animals which include many more groups. At least 1 million of animal species are insects. Humans belong to the one only species Homo sapiens of Hominina clade. Talking <span>about </span>plants, there are about 300.000 species, leaving animals as the right answer.