Question

Which sentence correctly uses commas to create a compound sentence?

The Library of Congress houses over 147 million items, and it is the largest library in the world.
The Library of Congress houses over 147 million items and, it is the largest library in the world.
The Library of Congress houses over 147 million items and it is the largest library in the world.
The Library of Congress houses over 147 million items, it is the largest library in the world.

Answer 1

"The Library of Congress houses over 147 million items, it is the largest library in the world." is the correct answer.

Answer 2

The last sentence is correct and shows the use of a comma to create a compound sentence.