Which famous British physicist wrote A Brief History of Time?

Stephen Hawking is the famous physicist who wrote a brief History of time

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

you didn't give any options but heres what i can tell you: an inference is likely to change based on additional observations. the latter is something that you have seen or sensed using your sensory organs while the former is like a conclusion out from what you have observed.