In light dependent reactions of photosynthesis, the cyclic electron transport yields only:

Explanation

The cyclic electron transport in the light-dependent reactions of photosynthesis specifically produces ATP. This is because the electrons are cycled back to the photosystem, allowing for the generation of ATP without the production of NADPH or oxygen. Water is consumed, not produced, in these reactions, as it is split to provide electrons. Oxygen is released as a by-product of the water-splitting process but only in non-cyclic electron transport. NADPH is also a product of non-cyclic electron transport, not cyclic.