|Question 24Verbal

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While researching a topic, a student has taken the following notes:
• A supercontinent is a single landmass made up of most or all of Earth's continents.
• Over time, continents merge together to form supercontinents, which then break apart.
• This process is believed to take hundreds of millions of years and is known as the supercontinent cycle.
• Ur was a supercontinent that formed about 3.1 billion years ago.
• Pangaea was a supercontinent that formed about 300 million years ago.
The student wants to emphasize a difference between the two supercontinents. Which choice most effectively uses relevant information from the notes to accomplish this goal?
Ur formed about 3.1 billion years ago but eventually broke apart.
A
Forming and breaking apart over hundreds of millions of years, supercontinents are made up of most or all of Earth's continents.
B
Ur and Pangaea were both supercontinents, single landmasses made up of most or all of Earth's continents.
C
Pangaea formed about 300 million years ago, but Ur formed much earlier-about 3.1 billion years ago.
D