which sentence uses dashes correctly?\no uluru is also known as ayers rock—it is a large sandstone formation…

which sentence uses dashes correctly?\no uluru is also known as ayers rock—it is a large sandstone formation in central australia.\no australia is home to some unusual animals such as kangaroos—wallabies—koalas—kookaburras.\no ballaratone is of the centers of the 19th - century australian gold rush and gold is still being mined—today.\no sydney draws visitors from all around the world to see its iconic architectural masterpiece—the sydney opera house.

which sentence uses dashes correctly?\no uluru is also known as ayers rock—it is a large sandstone formation in central australia.\no australia is home to some unusual animals such as kangaroos—wallabies—koalas—kookaburras.\no ballaratone is of the centers of the 19th - century australian gold rush and gold is still being mined—today.\no sydney draws visitors from all around the world to see its iconic architectural masterpiece—the sydney opera house.

Answer

Brief Explanations:

Dashes are used to set off an explanation or an aside. In the first option, "it is a large sandstone formation in central Australia" is an explanation of Uluru (Ayers Rock), and the dash is used correctly. In the second option, the dashes between animals are incorrect - commas should be used. In the third option, "today" is not an appropriate aside and the dash usage is wrong. In the fourth option, the dash before "the Sydney Opera House" is incorrect - a colon would be more appropriate for introducing a specific example.

Answer:

Uluru is also known as Ayers Rock—it is a large sandstone formation in central Australia.