TASK DEFINITION: You are given a science question (hard-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.
PROBLEM: Which is a renewable resource?  
 (A) oil (B) coal (C) trees (D) aluminum

SOLUTION: C

PROBLEM: Which of these is never found in prokaryotic cells?  
 (A) cell membrane (B) ribosome (C) cell wall (D) nucleus

SOLUTION: D

PROBLEM: How much energy is needed to raise the temperature of 5.0 grams of lead from 25°C to 35°C? [specific heat (c) = 0.129 J/(g °C)] q = c \times m \times \Delta T  
 (A) 6.45 J/(g °C) (B) 6.45 J (C) 16.1 J/(g °C) (D) 16.1 J

SOLUTION:
B