The assertion in option 1 states that both A and R are true, and R is the correct explanation for A. Let`s evaluate each option to determine if this is accurate.

Option 1: Both A and R are individually true and R is the correct explanation of A.

In this option, A states that steam is more harmful to the human body than boiling water in the case of a burn. R states that boiling water contains more heat than steam.

From a scientific perspective, A is incorrect. Steam is actually less harmful than boiling water in the case of a burn. Steam dissipates quickly upon contact with the skin, whereas boiling water can continue to cause damage due to its higher heat content.

Therefore, option 1 is incorrect.

Option 2: Both A and R are individually true, but R is not the correct explanation of A.

Option 2 states that A and R are both true, but R is not the correct explanation for A.

Based on the explanation provided above, this option is accurate. A is false, and R is true, but it doesn`t explain why A is false.

Option 3: A is true, but R is false.

Option 3 states that A is true, but R is false