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      Question

      In the question below, a situation is given, followed

      by three statements that may or may not be possible reasons for that situation. Select the combination of options that represents the most logical and possible reasons for the situation described. Situation: Despite the vast advancements in deep-sea exploration technology, less than 10% of the Earth's ocean floor has been mapped in high resolution. This leaves marine geologists with limited knowledge regarding underwater mountain ranges and hydrothermal vents. Possible Reasons: 1. The high pressure and extreme temperatures of the deep ocean make it difficult for standard electronic sensors to operate consistently over long periods. 2. Sunlight cannot penetrate beyond a certain depth, making traditional satellite-based photography ineffective for mapping the seafloor. 3. The tectonic plates under the ocean move at a much faster rate than plates on land, causing mapped areas to become outdated within a few weeks.
      A Only 1 and 2 Correct Answer Incorrect Answer
      B Only 2 and 3 Correct Answer Incorrect Answer
      C Only 1 and 3 Correct Answer Incorrect Answer
      D All 1, 2, and 3 Correct Answer Incorrect Answer
      E Only 2 Correct Answer Incorrect Answer

      Solution

      Reason 1 is a possible reason: The physical environment of the deep sea (pressure/temperature) is a well-known technical barrier. If the technology cannot withstand the environment, the mapping progress will naturally be slow or incomplete. Reason 2 is a possible reason: This explains why we cannot simply use the same satellite methods used for land. Water absorbs light, rendering optical sensors from space useless for high-resolution floor mapping, thus requiring more difficult and expensive sonar-based ship expeditions. Reason 3 is not a possible reason: While tectonic plates do move, they move at a rate of a few centimeters per year, not weeks. The idea that maps become "outdated within weeks" is factually incorrect and logically fails to explain why we haven't mapped the areas in the first place.

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