Please choose the correct answer to the question: A recent study concluded that about 90% of all large predatory fish such as tuna have disappeared from the world's oceans in the past 50 years. Which of these is most likely the direct cause of this loss?

Answer1: Urban development near the coast Answer2: Commercial harvesting from the ocean Answer3: Climate change on Earth Answer4: Acid precipitation over the oceans

Answer format: answer1/answer2/answer3/answer4