Which excerpt below includes a metaphor? a It is the top floor of a warehouse and an office building in Amsterdam, Holland. b The sharply peaked roof of the building is outlined against a sea of other rooftops stretching way into the distance. c Nearby is the belfry of a church tower, the Westertoren, whose carillon rings out the hours. d Occasionally faint sounds float up from below.

b. The sharply peaked roof of the building is outlined against a sea of other rooftops stretching way into the distance.

Explanation:

A metaphor may be defined as that figure of speech which is used to describe the action or an object in such a way that it is not literally true. A metaphor is only used to make a comparison or explain the idea.

In the context, the metaphor is the sea. In the sentence the boundary of the peaked roof of the building is being stretched with the others rooftops which has been compared to the sea of rooftop as there are a large number of  rooftops that are stretching in the way.