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Craft and StructureMediumFunction of a sentence about trail markers

Craft and Structure practice question

The trail is marked with white paint. Every marker faces downhill. The markers were placed for people coming down in bad weather, when the way is hardest to find, and not for those going up in the morning sun.

Which choice best describes the function of the sentence "Every marker faces downhill" in the text as a whole?

  1. A. It states the detail that the following sentence explains.Correct
  2. B. It describes the colour of the markers.
  3. C. It warns walkers against going uphill.
  4. D. It explains why the weather is bad.

Answer: A. It states the detail that the following sentence explains.

The detail, then its reason.

Why the other answers are wrong

B. It describes the colour of the markers.
Colour is in the first sentence.
C. It warns walkers against going uphill.
No warning.
D. It explains why the weather is bad.
No weather explanation.

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