Answer: A narrowing of the bid-ask spread results in an increase in market liquidity.

## Explanation Let's analyze each option: - **Option A** is incorrect: A liquidity backstop is actually a **source** of emergency funding, not a halt in funding. It's typically provided by parent banks or central banks to support entities like SIVs during liquidity crises. - **Option B** is correct: A narrowing of the bid-ask spread indicates improved market liquidity. When spreads narrow, it's easier to buy and sell assets without significant price impact, which is a key characteristic of liquid markets. - **Option C** is incorrect: Both loss spirals and margin spirals can generate significant losses, but they operate differently. A loss spiral occurs when declining asset values trigger forced sales, which further depress prices. There's no inherent comparison that one generates "lower new position value" than the other. - **Option D** is incorrect: In a CDS, the protection buyer makes periodic payments to the protection seller. The protection buyer receives payments only if a credit event occurs, not regular cash flows from the underlying portfolio. The correct answer is B, as it accurately describes the relationship between bid-ask spreads and market liquidity.

Author: LeetQuiz Editorial Team