1. A. Kinetic.Temperature measures the average kinetic energy of the particles in a substance, which relates to how fast they move.2. B. increasesWhen particles move faster, their average kinetic energy increases, which means the temperature of the object increases.3. Do all particles of the substance at a certain temperature move at the same speed and in the same direction? Explain briefly.No. Particles in a substance move at different speeds and in random directions even at the same temperature. Temperature is an average measure of their kinetic energy, but individual particles vary in their speeds and directions constantly.