According to the text, psychoanalysis asserts defense mechanisms are employed by . a. the id to block accusations and guilt coming from the superego b. the ego to block the awareness of inadmissible urges and thoughts about them c. the superego to thwart expression of sexual and aggressive urges d. all three personality systems as they contend with the regulation of antisocial instincts

The correct option is option b: the ego to block awareness of inadmissible urges and thoughts about them.

Explanation:

Psychoanalysis suggest that defense mechanisms are employed to protect ourselves from feelings of anxiety or guilt, which arise because we feel threatened, or because our id or superego becomes too demanding.

Defense mechanisms operate at an unconscious level and help ward off unpleasant feelings (i.e., anxiety) or make good things feel better for the individual.

Explanation:

imperial crisis leads to civil war.

roman forces withdraw from britain as goths attack rome.

odoacer topples romulus augustus

huns attack the empire and drive german peoples ahead of them.