In the light-reactions of photosynthesis, the high-energy output molecule among the products formed would be the ATP.
In the light reaction of photosynthesis, two products are formed:
While the NADPH is essentially an energy molecule and electron carrier for the electron transport chain, the ATP is a molecules that can be hydrolyzed to release a high amount for energy for cellular processes.
Hence, going by the available options, the high-energy output molecules would be ATP.
More on the light reaction of photosynthesis can be found here; https://brainly.com/question/14015819