The correct answer is option (d) latent heat, calorie, heat, and temperature. Let's analyze each of the statements to identify the concept they refer to: I. 'Amount of heat required to change the physical state of a substance while keeping its temperature constant.' This statement describes the concept of latent heat, which is the energy required to change the physical state of a substance (e.g., from solid to liquid or from liquid to gas) without changing its temperature. II. 'Amount of heat required to raise the mass of 1 g of water by 1 °C.' This statement defines the unit of calorie, which is the amount of energy required to raise the temperature of 1 gram of water by 1 degree Celsius. III. 'Energy in transit due to the temperature difference between two bodies.' This statement describes the concept of heat, which is the transfer of thermal energy between two bodies that are at different temperatures. IV. 'Measures the agitation state of the particles of a body.' This statement refers to the concept of temperature, which is a measure of the average kinetic energy of the particles of a body, in other words, a measure of how agitated the particles are. Therefore, the correct option (d) latent heat, calorie, heat, and temperature is the one that correctly associates each statement with its corresponding concept.