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.

Students are conducting an investigation to see how sunlight affects the speed of plant growth. They measure the growth of the plant at the end of two weeks. What would be the best way to communicate the results of this investigation?
(A) draw a picture (B) make some notes (C) make a chart or graph (D) tell the science teacher
C