Due to ocean acidification when the ocean becomes more acidic, what happens to the pH level of the ocean?

The pH level goes down.

The correct answer is Option (1) → The pH level goes down.

Ocean acidification is caused by the absorption of carbon dioxide (CO2) from the atmosphere. This CO2 reacts with seawater, making it more acidic. The pH scale is a way to measure acidity, with lower numbers indicating higher acidity. So, as the ocean absorbs more CO2, the pH level goes down.