Final answer:
The most accurate current description of the Universe is the Big Bang theory, which suggests it originated from a singular point and is still expanding. Previous models include the geocentric and heliocentric theories.
Step-by-step explanation:
The most accurate description of the Universe, as we currently understand it, is C) Big Bang theory. This cosmological theory posits that the Universe originated from a single, extremely dense and hot point, or singularity, approximately 13.8 billion years ago. Over time, it has expanded to its current state. This theory is supported by a wealth of scientific evidence, including the observed redshift of distant galaxies (indicating that the Universe is expanding) and the cosmic microwave background radiation (the afterglow of the Big Bang).
Previously, people believed in the geocentric theory, where Earth was considered the center of the universe with celestial bodies revolving around it. This view, known as the Ptolemaic model, was eventually replaced by the heliocentric theory—with the Copernican model placing the Sun at the center of the solar system, supported by Newton's laws of motion and universal gravitation. The plate tectonic theory, while relevant to Earth's geology, is not a cosmological theory and does not describe the Universe as a whole.