A.I. Explanation:

Option 1: "To make us wonder what's living in the depths of ocean."

Explanation: While the text begins with a question that evokes curiosity, the main focus is not on creating wonder but rather on the findings of the submarine expedition. The text does not emphasize the feeling of wonder as its primary purpose.

Option 2: "To tell about failed submarine expedition to the ocean floor."

Explanation: The text clearly states that the submarine expedition has recently ended and that initial analysis results have been obtained. Therefore, it does not describe a failed expedition, making this option incorrect.

Option 3: "To give exact details of what is lying in the depths of ocean."

Explanation: The text mentions that scientists have identified new species but does not provide exact details about these species. Thus, this option is misleading as it implies a level of detail that is not present in the text.

Option 4: "To give information about ocean floor in an interesting way."

Explanation: This option accurately reflects the main idea of the text. The text presents information about the ocean floor and the findings of the expedition in an engaging manner, starting with a thought-provoking question and concluding with the identification of new species.