Final answer:
The correct answer is b, indicating a passive filter pulls in data and pushes out transformed data in the pipe/filter architecture. Confusion may arise from statements c and d which erroneously apply light filter properties to this context. The question is about software architectures, not the properties of color filters in physics.
Step-by-step explanation:
The correct statement about the pipe/filter architecture is b. A passive filter pulls in data and pushes out the transformed data. This is because a passive filter does not generate data on its own but rather processes the data that comes to it through a pipe. In contrast to the provided options c and d, a passive filter does not work with a passive pipe and there are not two types of filters in the context of pipe/filter architecture; filters are simply components that transform data. Reflecting on the context of the question, it seems there might have been confusion with the properties of light filters, but the correct answer pertains to software architecture, not physics.
When dealing with a blue filter in the context of light, as described in statement c from the reference information, a blue filter absorbs all light but blue; it does not reflect all other colors. As for statement d, it is incorrect because a blue light filter would not absorb blue light; rather, it would typically allow blue light to pass through and absorb other colors.