|Question 25Verbal

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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.
Columbia was a supercontinent that formed about 1.8 billion years ago.
The student wants to emphasize the order in which the supercontinents were formed. Which choice most effectively uses relevant information from the notes to accomplish this goal?
Forming and breaking apart over hundreds of millions of years, supercontinents are made up of most or all of Earth's continents.
A
Ur formed about 3.1 billion years ago but eventually broke apart.
B
Ur and Columbia were both supercontinents, single landmasses made up of most or all of Earth's continents.
C
The supercontinent Columbia formed long after the supercontinent Ur.
D