Which of the following locations would contribute to formation of mid-latitude cyclones?
A. where air converges and slows as it passes from an upper air trough to an upper air ridge principles
B. where air spreads out and accelerates as it passes from an upper air trough to an upper air ridge
C. where air converges and accelerates as it passes from an upper air ridge to an upper air trough
D. where air spreads out and accelerates as it passes from an upper air ridge to an upper air trough
Answer: B
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