Answer:
D
Explanation:
An endothermic reaction is one in which there is a temperature fall and the reaction vessel becomes colder. For example, adding potassium iodide crystal to water in a beaker, the beaker becomes cold.
Now, to the question: The most endothermic reaction is the one with the largest temperature drop
A is wrong, temperature rises , it is exothermic
B is endothermic but not correct
C is wrong, temperature rises, it is exothermic
D is correct, temperature falls, It is endothermic and has the largest temperature drop, so we pick it
