---- the global semiconductor shortage persisted, vehicle manufacturers were forced to suspend assembly lines for several weeks.
Answer and explanation
Correct answer: A. As
- Step 1: The sentence establishes a clear cause-and-effect relationship between the supply shortage and halted assembly lines.
- Step 2: 'As' functions here as a subordinating conjunction meaning 'because' or 'since'.
Answer
As.
Why not the others: 'Although' denotes concession; 'Whereas' indicates direct contrast; 'Unless' means except if.
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