You are presented with the question "what causes a solid to form?" and the following answer choices: - sunlight - evaporative cooling - gases - Physical weathering - water evaporation - lower temperature thresholds - exposure to cold - fissures of hot, acidic water Now knowing that freezing causes a solid to form and lower temperature thresholds are at freezing, choose the best answer.
The answer to this question is:
lower temperature thresholds