Read the excerpt: 'In historical linguistics, the Safaitic and Hismaic inscriptions etched into the basalt desert rocks of the Black Desert (Harra) provide crucial epigraphic testimony to early Arabian dialects. These personal graffiti record seasonal grazing routes, nomadic warfare, and ancestral genealogies.'
What is the author's primary purpose in the excerpt?

Answer and explanation

Correct answer: A. To describe the historical and linguistic significance of ancient desert petroglyphs in eastern Jordan

  1. Step 1: Analyze central theme: The passage highlights the value of Safaitic and Hismaic inscriptions on basalt rocks for understanding early dialects, nomadic lifestyle, and history.
  2. Step 2: Determine communicative intent: Informational and scholarly appreciation of the epigraphic record.
  3. Step 3: Select 'To describe the historical and linguistic significance of ancient desert petroglyphs in eastern Jordan'.
Answer
To describe the historical and linguistic significance of ancient desert petroglyphs in eastern Jordan.
Why not the others: 'Unsuited for research' contradicts the text's assertion of 'crucial epigraphic testimony'; 'Compare with Greek' is not mentioned; 'Industrial extraction of basalt' is completely irrelevant.

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