Given Derek's zero tolerance for risk, he will prefer assets that are less risky and have a higher likelihood of preserving capital. Therefore, we need to rank the assets from least preferred to most preferred based on their risk levels:
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Common stock of Polluted Sea (e) - This is likely the least preferred because common stocks are generally the riskiest assets and their likelihood of losing value is high, especially for a company referred to as "Polluted Sea."
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Common stock of Caspian Sea (c) - This will be preferred over the common stock of Polluted Sea, but it is still a common stock and thus carries high risk.
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Preferred stock of Polluted Sea (d) - Preferred stocks are generally safer than common stocks, so this would rank higher than the common stocks, but still carries risk due to being associated with the Polluted Sea entity.
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Bond of Caspian Sea (b) - Bonds are typically less risky than stocks, and since the likelihood of default for Caspian Sea is considered zero, this would be a more preferred asset.
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Preferred stock of Caspian Sea (a) - Among the options, this is likely the most preferred asset due to its combination of being preferred stock and being associated with the Caspian Sea entity, which has a zero-risk of default.
So, the order of preference from least preferred to most preferred is:
- Common stock of Polluted Sea (e)
- Common stock of Caspian Sea (c)
- Preferred stock of Polluted Sea (d)
- Bond of Caspian Sea (b)
- Preferred stock of Caspian Sea (a)