Question

cosmology is the study of the origin and structure of the universe. the root logy means the study of something. what does the root cosmo mean? light universe earth or rock

Explanation:

Cosmology studies the universe's origin and structure, and "logy" means study. So "cosmo" should relate to the universe. "Light" and "earth or rock" don't fit the context of cosmology's focus on the universe.

Answer:

B. universe (assuming the options are labeled as A. light, B. universe, C. earth or rock)