At What Time Did the Universe Cool to a Temperature

question 63

Multiple Choice

At what time did the universe cool to a temperature of about 3 K?

• A) end of the inflationary era
• B) end of the Planck time
• C) very recently
• D) era of recombination

---

Definitions:

AIDS

Acquired Immunodeficiency Syndrome is a severe, possibly fatal disease caused by the human immunodeficiency virus (HIV) that impairs the immune system.

Somatogenic Perspective

An approach in psychology and medicine that emphasizes the physical causes of mental disorders.

Neurological Damage

Impairment of the nervous system's structure or function, often resulting from physical injury or disease, which can affect cognitive, sensory, or motor functions.

Tooth Extraction

A dental procedure that involves removing a tooth from its socket in the jawbone.