A.I. Explanation:

Option 1: "Coral reefs will be restored to full health as sea waters continue to cool."

Explanation: The text mentions that while scientists expect some coral reefs to recover due to cooling temperatures, it does not state that they will be restored to full health. The phrase 'more susceptible to disease' indicates that recovery may not lead to full health, contradicting this option.

Option 2: "New coral growth will be less vulnerable to disease."

Explanation: The text suggests that surviving corals will be more susceptible to disease, which directly contradicts the idea that new coral growth will be less vulnerable. Therefore, this option is not supported by the information provided.

Option 3: "The algae living in reefs will better tolerate higher water temperatures."

Explanation: The text states that the increase in temperature drove away the algae that provide food for corals, indicating that the algae are not adapting to higher temperatures. Thus, this option is not aligned with the text.

Option 4: "Corals will suffer further from increased sea temperatures."

Explanation: The text indicates that global-warming trends will likely lead to more frequent and severe episodes of heat, which suggests that corals will continue to suffer from increased sea temperatures. This aligns with the author's concern about the long-term impact of rising temperatures on coral reefs.