Final Answer:
The closest temperature to the boiling point for substance X is 100°C (Option 3).
Step-by-step explanation:
The boiling point of a substance is the temperature at which it changes from a liquid to a gas. In this case, the closest temperature to the boiling point of substance X is 100°C. This is because the options provided are in increments of 25°C, and 100°C falls right in the middle between 75°C and 125°C.
To elaborate, if the boiling point is around 100°C, then 75°C would be too low, and 125°C would be too high. The correct answer is the one closest to the midpoint, which is 100°C. This assumes a linear relationship between the provided options.
In summary, considering the given choices and the logic of the boiling point falling between 75°C and 125°C, 100°C is the most reasonable estimate for the boiling point of substance X. This answer provides a balanced and informed choice based on the available options and the nature of boiling point values.
Therefore, the correct option is 3) 100°C.