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.

If 1 kg of the compound toluene melts at -95°C, then 500 g of toluene will  
 (A) melt at -47.5°C. (B) melt at -95°C. (C) boil at 95°C. (D) boil at 47.5°C.
B

During which stage of an insect's life cycle does the female lay eggs?  
 (A) nymph (B) larva (C) pupa (D) adult
D

Which type of model best shows the location of underwater ocean ridges?  
 (A) world globe (B) satellite map (C) topographic map (D) nautical chart

C