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Only valid options are B and D, because of parallelism single out, begin trade and .... conclude + conclude by - is ok in the following sentence (negotiations were concluded by his secretary of state), but here we have different meaning in our sentence.
conclude with - is ok, ( the talk concluded with slides ) but it requires noun with US goverment's satisfaction will be ok. But not being ...., + parallelism problem
conclude to - is also ok, because TO concerns to US satisfaction. Satisfaction, satisfaction (nice track))))
D. Hope it's useful
The greatest pleasure in life is doing what people say you cannot do...