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.

[Q]: Which group of organisms can make food by a process called chemosynthesis?  
 (A) scavengers (B) producers (C) consumers (D) decomposers
[A]: B


[Q]: In animal skin tissue, cell division is responsible for  
 (A) growth and repair (B) sexual reproduction (C) obtaining energy (D) production of sex cells
[A]: A


[Q]: What is the function of hollow bones in birds?  
 (A) to streamline birds for efficient flight (B) to reduce the weight of birds for flight (C) to store oxygen for high-altitude flight (D) to make bones strong enough for flight
[A]:
B