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.

Which of these tools is best for recording observations outdoors?  
 (A) a ruler (B) a graph (C) a notebook (D) a calculator
C

What tool would be used to examine a fingerprint?  
 (A) a graduated cylinder (B) a hand lens (C) a pair of goggles (D) a thermometer
B

How are igneous and sedimentary rocks similar?  
 (A) They are both formed by erosion. (B) They are both formed from cooled lava. (C) Heat and pressure can turn them into lava. (D) Heat and pressure can turn them into metamorphic rock.

D