Which of the following best describes boiling?

The correct answer is A change that occurs throughout the liquid.

Practical lens: Link apparatus, readings, and uncertainty to the exact measurement named in the objective. This question asks: Which of the following best describes boiling. The correct response is A change that occurs throughout the liquid, because changes of state are explained by particle energy and arrangement. In Changes of state, the marking point should connect directly to explain boiling using particles gaining enough energy to separate throughout a liquid. If the question includes values, the working must keep the appropriate unit and operation; if it is an explanation, it must name the relevant particle behaviour or energy change. This item belongs to Changes of state and the particle model, so avoid answers that switch to a different quantity, confuse heat with temperature, or describe gas pressure without collisions when collisions are the reason. Checkpoint 134 is distinct because it uses this exact question context and the practical lens rather than a generic particle-model sentence.