The idea of "hypodescent" (like the belief in racial difference on which it is based) can be said to be a "human construct" mainly because?

- It is based on ideology rather than on phenomena proved to exist in nature.

Explanation:

A 'human construct' is described as an idea or belief that is based entirely on subjective and exists mainly due to  Such ideas do not have any kind of affiliation to the object reality and they exist mainly due to the reason that humans believe that it exists.

As per the question, the idea of 'hypodescent' which implies the belief that involves considering certain racial or ethnic groups as dominant while the others as inferior, would be considered as a 'human construct' primarily as it is based mainly on an ideology instead of being a proven natural phenomenon that exists naturally which is not the case. Since such beliefs have no objectivity, it would be considered 'human construct'.

answer; strength of association;