Read the excerpt:

The Suez Canal links the Mediterranean Sea with the Red Sea, so ships can travel between Europe and Asia without sailing around Africa. It opened in 1869 after ten years of construction. The canal has no locks because the two seas are at nearly the same level. Today about twelve percent of world trade passes through it, which makes its smooth operation important to the global economy.

What can be inferred about the canal's importance?

Answer and explanation

Correct answer: D. A blockage could disturb world trade

  1. Step 1: Find the relevant detail in the text: "about twelve percent of world trade passes through it".
  2. Step 2: This detail answers the question directly.
Answer
A blockage could disturb world trade.
Why not the others: "It is used only by Egyptian ships" is not supported by the text; "It carries only oil" is not supported by the text; "It has little effect on prices" is not supported by the text.

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