The most controversial version of social stratification theory is theory, in part because it can be used to justify ageism and social isolation.

The most controversial version of social stratification theory is disengagement, in part because it can be used to justify ageism and social isolation.

Explanation:

Social stratification refers to classification of people in the society based on socioeconomic factors like wealth, education, race, gender, etc. Slavery, caste, estates and class are considered to be the major factor of stratification.

Social isolation means isolating a person completely from the society.

Disengagement theory of aging reveals that aging causes stratification. The interaction between the aging person and the individual in the society will be reduced. Some of the individuals are even isolated or refrained from the conversation due to age factor.

the branch of biology that deals with the normal functions of living organisms and their parts.

the way in which a living organism or bodily part functions.

answer; pentagon papers, vietnam draft-resistor, james dean, american revolution;