High School Vocabulary Practice Test 2026 – Complete Exam Prep

Think about word roots that carry a clear meaning. Aster- comes from Greek aster, meaning star, and it shows up in many familiar terms like asteroid, astronomy, and asterism. That direct link to star is why this option fits the meaning best. The other roots point to different ideas: proto means first or primitive, thesis refers to a statement or position, and graph means to write or record. Since the question asks for the meaning 'star,' the root aster is the correct choice.