Lena often expresses her anger in private but never in public. Her husband, Leonard, sometimes expresses his anger in public but would be very embarrassed to be caught crying in public. This example illustrates: A. culturally determined display rules. B. gender differences in blood levels of the hormone estrogen. C. innate characteristics of emotional expression. D. gender differences in blood levels of the hormone testosterone.

c. Innate Characteristics of emotional expression.

Explanation:

Innate Characteristics of emotional expression are the universality of facial expressions emotions which are genetically determined and passed on from one generation to another.

There are certain factors that affect this facial expression, such as social and culture belief. These factors in most cases makes people not to expressed their emotion fully using the right facial expression.

Example, Men are expected to be strong and not to cry in the public, this belief can make a man who really needs to let out his emotion through crying to suppress it.

It is not all facial expression that are innate and universal.

Some can be learned and change based on situations.