Which of the following best describes evaporation?

The correct answer is It happens at the surface of a liquid at any temperature..

Evidence lens: Use the data, graph feature, practical observation, or particle behaviour that proves the answer. This question asks: Which of the following best describes evaporation. The correct response is It happens at the surface of a liquid at any temperature., because gas pressure comes from particle collisions with container walls. In Changes of state, the marking point should connect directly to describe solids, liquids and gases in terms of particle arrangement and movement. 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 117 is distinct because it uses this exact question context and the evidence lens rather than a generic particle-model sentence.