instruction:
You are given a science question (easy-level) and four answer options (associated with "A", "B", "C", "D"). Your task is to find the correct answer based on scientific facts, knowledge, and reasoning. Do not generate anything else apart from one of the following characters: 'A', 'B, 'C', 'D'. There is only one correct answer for each question.
question:
A student has just completed a laboratory activity. What is the last action that the student should perform before leaving the lab area?  
 (A) wash hands (B) turn off all equipment (C) put away all glassware (D) wash instruments and table tops
answer:
A


question:
A star is a large astronomical body that  
 (A) reflects light. (B) condenses light. (C) emits light. (D) absorbs light.
answer:
C


question:
Most of Earth's major earthquakes are caused by  
 (A) seasonal heating and cooling of Earth's surface (B) weathering of rock at Earth's surface (C) Earth's gravitational attraction to the Moon (D) faulting of rock in Earth's crust
answer:

D