When the ego refuses to acknowledge anxiety-producing realities, this is the defense mechanism known as

This is the defense mechanisms known as denial.

Explanation:

A defense mechanism is an unconscious process which occurs when an individual cannot handle the stress and anxiety induced by his/her reality and needs to protect him/herself from it.

Denial is a type of defense mechanism in which the individual refuses to accept his/her reality and thus blocks external events which can damage his/her conscience. In this case, he/she can be seen in complete denial and thus acts as if certain things, events or aspects do not exist.

manifest functions are the recognized and intended consequences of any social pattern, while latent functions are those unrecognized and unintended consequences. to analyze the manifest functions of any social institution, we have to study its contribution to the continuation of a group, community, or society.

the period of human evolution has coincided with environmental change, including ('hominin' refers to any bipedal species closely related to humans – that is, on how do we know earth's climate has changed? a map showing dates and locations of prehistoric archeological sites and migration routes from africa into.