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.
--------
Question: How much time is required for a bicycle to travel a distance of 100 m at an average speed of 2 m/s?  
 (A) 0.02 s (B) 50 s (C) 100 s (D) 200 s

Answer: B


Question: A DNA strand contains codons, which consist of a sequence of three nucleotides. Which best describes the importance of codons found in the sequence of DNA?  
 (A) They contain the code for messenger RNA. (B) They signal the start of mitotic cell division. (C) They ensure proper replication of the genetic code. (D) They are used to assemble amino acids for protein synthesis.

Answer: D


Question: Researchers work in teams to make cars more fuel efficient. Which of these statements describes the main advantage of working in teams rather than working individually?  
 (A) The research is more likely to be published. (B) The research costs less to perform. (C) The researchers can share their ideas. (D) The researchers have more time to complete work.

Answer:
C