When western fence lizards express territorial claims, their bellies turn blue. this illustrates the design feature
a. arbitrariness.
b. cultural transmission.
c. productivity.
d. interchangeability.
e. displacement.
f. discreteness.

A. Arbitrariness.

Explanation:

When Western Fence Lizards express territorial claims, their bellies turn blue. This illustrates the design feature arbitrariness.

Arbitrariness is the characteristic of being "by circumstance, instinct, or inclination decided and not by need, intention, or theory." It is often used to refer to a decision taken with little or no specific requirements or constraints. Arbitrary choices are not necessarily the same as those taken at random.

european feudalism was a combination of legal and military customs in medieval europe that flourished between the 9th and 15th centuries. broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

japanese feudalism. the era of feudalism in japan took place from the 12th through 19th centuries. during that period local rulers, either powerful families or military warlords, dominated the land, while the emperor was merely a figurehead and not a significant political presence.