Choose the correct statements among the following:
A. Heat flow between two bodies is due to difference in their temperatures.
B. The change in temperature in Celsius and Kelvin scale are the same.
C. Kelvin is the standard temperature scale.
D. Heat is caused while temperature is the effect.

Hint: The above problem is resolved by using the thermal energy transfer concepts and the fundamentals related to the thermal energy transfer. In addition to this, the concept and definition of temperature are used to highlight the thermal energy's meaning.

Complete step by step answer:
According to the statement given in option A, the heat always tends to flow from the region of higher temperature to one having a lower temperature. Therefore, this statement makes sense, and it is correct.According to the statement given in option B, the temperature changes for any object, when determined in terms of Kelvin or terms of Celsius, then these standards are never equal to each other. Because while calculating, we always add 273 to the degree Celsius values. Therefore, this option is not correct.
As per the option (C) statement, the kelvin is the standard unit to measure the temperature. We suppose to change the values of degree Celsius to kelvin. Therefore, this statement is also correct.The option (D) says that the heat is a cause, and the temperature is an effect. This statement is also true because if we consider friction, then heat is produced due to rubbing, which changes the overall temperature. Therefore, this statement is also correct.
Therefore, options (A), (C) and (D) are correct.

Note: To resolve the given problem, one must understand the concepts and the meaning of the heat transfer. Moreover, it is necessary to understand the difference between the temperature and the heat transfer.