The correct option is D trigger
It is written in the passage that, 'The art world may, one agree with you that the product of your two minute moment precipitates a major transformational turning point in you career...'
In this context precipitate means, cause an event or situation, typically one that is undesirable to happen suddenly, unexpectedly, or prematurely. Therefore the correct synonym is option (b), trigger that means, cause an event or situation to happen or exist. Other options have different meaning