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.

Which land feature is formed from erosion by waves?   
 (A) a sandbar (B) a sea cliff (C) a barrier reef (D) a barrier island
B

Which of these is a renewable resource found in Nevada?  
 (A) zinc metal (B) gravel deposits (C) petroleum products (D) geothermal energy
D

Students are studying the classifications of stars and they learned that the majority of stars are similar to the Sun. What can the students conclude knowing that most of the stars in the galaxy are like the Sun?  
 (A) Most of the stars will become black holes. (B) Most of the stars are main sequence stars. (C) Most of the stars are protostars. (D) Most of the stars are red giants.

B