What role does ATP play? Alright. So ATP here, through hydrolysis, will release energy. This energy can be used to help drive this unfavorable reaction. Here we're going to say it's going to transfer energy to drive the endothermic reaction. So option A is the best answer.
Here, to act as a catalyst. No. It's not acting as a catalyst. It's acting as an energy source. Speed up the rate of the reaction. Well, here both options B and C are saying the same thing. Speeding up the rate of the reaction would mean it's acting as a catalyst, which is not what it's doing. A catalyst speeds up a reaction by lowering the energy of activation. It doesn't change an unfavorable reaction into a favorable one. That's why it doesn't work and it's not a good option.
Absorb energy from the surroundings? No. If we're cutting or cleaving a phosphorus-oxygen bond, we're releasing energy. Then we can use that energy to drive our next reaction. So here, option A is the correct answer.