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]: The teacher heats a pot of water. Once the water reaches 100C, which point has the water reached?
(A) boiling (B) melting (C) freezing (D) evaporating
[A]: A

[Q]: Florida has a large supply of phosphate that ancient seas deposited millions of years ago. The phosphate contains the remains of animals that were deposited in layers on the sea floor. Which type of rock did the phosphate become?
(A) intrusive igneous (B) extrusive igneous (C) clastic sedimentary (D) organic sedimentary
[A]: D

[Q]: When performing a new experiment for the first time, a scientist reaches an unexpected conclusion. What must the scientist do in order to have the conclusion accepted by other scientists?
(A) write a brief report (B) repeat the experiment (C) purchase new equipment (D) make a data chart
[A]:
B