Final answer:
Chocolate has the lowest melting point among the given substances.
Step-by-step explanation:
Out of the given substances, chocolate has the lowest melting point. Chocolate is made from cocoa butter, which is a fat. Fats generally have lower melting points compared to other substances such as water or oils. The melting point of chocolate ranges from around 86°F to 90°F (30°C to 32°C).
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