What happens to the average kinetic energy of particles when the temperature increases (Internal energy)

The correct answer is It increases.

Graph lens: Read the trend, flat section, gradient, or axis labels before explaining the physical meaning. This question asks: What happens to the average kinetic energy of particles when the temperature increases (Internal energy). The correct response is It increases, because changes of state are explained by particle energy and arrangement. In Internal energy, the marking point should connect directly to apply the conservation of energy idea to heating and changes of state. 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 Internal energy and energy transfers, 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 267 is distinct because it uses this exact question context and the graph lens rather than a generic particle-model sentence.