In which sentence is the underlined phrase an adverb prepositional phrase? the united states launched its skylab space station in may 1973. some of the experiments on the space station in the design of new technology. the international space station has created a strong partnership between many countries. scientists on the international space station conduct hundreds of experiments.

B: in the design of new technology.

Explanation:

 In the adverb prepositional phrase "in the design of new technology", the words design of new technology  is the object of the preposition in. This preposition shows the relationship between the verb help  and the design of new technology, it also informs where "Some experiments on the Space Station" help.

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explanation: