Question

Which sentence uses commas correctly? A. Volcanoes spew molten rock and, they mostly exist along the Pacific Rim. B. The blue whale is the largest animal on Earth and it is larger than any of the prehistoric dinosaurs. C. Computers are useful tools, and, they are becoming more powerful every year. D. Seaweed floats in the ocean, and some kinds can be harvested for food.

Answer 1

The sentences that use commas correctly is A) Volcanoes spew molten rock and, mostly exist along the Pacific Rim.