Which of the following statements about endothermic reaction is correct?

The correct statement about endothermic reactions is that "heat energy is absorbed." Endothermic reactions are those in which energy is absorbed from the surroundings, usually in the form of heat. This causes the temperature of the surroundings to decrease. Activation energy refers to the energy required to start a chemical reaction, and it can be high or low for both endothermic and exothermic reactions. A catalyst is a substance that speeds up a chemical reaction, but it is not always required for an endothermic reaction. Endothermic reactions can occur reversibly or irreversibly, depending on the specific reaction and conditions. The reversibility of a reaction refers to whether it can proceed in both forward and backward directions.