Please choose the correct answer to the question: Scientists have measured the rate of growth of the Atlantic Ocean basin to be about 2 to 3 cm per year. This type of activity coincides with the formation of ridges on the ocean floor. What is the most likely cause of this activity?

Answer1: erosion from tidal action Answer2: the deposition of sediment Answer3: the flow of continental basalt Answer4: movement from tectonic plates

Answer format: answer1/answer2/answer3/answer4