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.

[EX Q]: Which series correctly represents the levels of organization in an organism?
(A) cells -> organs -> organ system -> tissue (B) cells -> tissue -> organs -> organ system (C) tissue -> cells -> organ system -> organs (D) tissue -> organ system -> cells -> organs
[EX A]: B

[EX Q]: On a cold, cloudy day, the local weather forecaster predicts that a high-pressure system will be moving into the area in the next 24 hours. Which weather conditions will this system most likely bring to the area?
(A) stormy (B) sunny (C) snowy (D) hot
[EX A]: B

[EX Q]: What is the main function of the chloroplasts in plant cells?
(A) to produce glucose (B) to keep the cell rigid (C) to make the cell divide (D) to allow the plant to reproduce
[EX A]:
A