Question

the term heliocentrism refers to which belief?
a some elements are lighter than air.
b the sun is at the center of the universe.
c human life was created by a higher power.
d the earth is the only planet containing life.

Explanation:

Heliocentrism is an astronomical theory. It posits that the Sun is at the center of the Universe, and the Earth and other planets revolve around it. Option A is about element density, Option C is about creation beliefs, and Option D is about planetary life - it has no relation to the core concept of heliocentrism.

Answer:

B. The sun is at the center of the Universe.