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: Most of the United States is a part of which tectonic plate?  
 (A) Pacific Plate (B) Eurasian Plate (C) North American Plate (D) South American Plate

Answer: C


Question: Which is a way the agricultural biotechnology industry could have a positive impact on the environment?  
 (A) by producing crops that are virus resistant (B) by making robots to replace large farm machines (C) by reducing the need for countries to import food (D) by increasing the use of wind farms that produce electricity

Answer: C


Question: A certain fossil (Y) is found in a layer of rock that lies between two index fossils, X and Z. Surprisingly, the older of the index fossils (Z) is found above the other fossils, suggesting that the rock layer has overturned. Which dating method is best to confirm the rock layer has overturned by determining the ages of these fossils?  
 (A) anatomical comparison (B) gene sequencing (C) radiometric analysis (D) fossil depth measurement

Answer:
C