Advanced English Primary 3 Comprehension

Read the passage and answer the question.\n\nEvery year, thousands of sea turtles return to the beach where they were born to lay their eggs. They navigate across thousands of kilometres of ocean using the Earth's magnetic field as a guide. The female turtle crawls up the beach at night, digs a nest, lays about 100 eggs, and covers them with sand. She then returns to the sea. The eggs hatch after about two months and the hatchlings make their way to the ocean, guided by the natural light of the horizon.\n\nWhat can be inferred about sea turtles based on the passage?

A Sea turtles are only found in Singapore's waters.
B Sea turtles have the ability to detect the Earth's magnetic field to navigate.
C Sea turtles lay eggs on any available beach.
D Sea turtles protect their eggs until they hatch.
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Worked Solution

Step 1: Identify what can be inferred — a conclusion supported by but not directly stated in the passage. Step 2: The passage says turtles navigate using Earth's magnetic field. This implies they can detect it. Step 3: Verify option B: "using the Earth's magnetic field as a guide" → the turtle must be able to sense it to use it for navigation. This is a valid inference. Answer: Sea turtles have the ability to detect the Earth's magnetic field to navigate.

Correct answer: Sea turtles have the ability to detect the Earth's magnetic field to navigate.

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