Question

what do the experts believe is the actual cause of the trees dying off? european sailors taking the wood to repair their ships. rats. lots and lots of rats. an increased frequency of hurricanes. the island was flooded with saltwater.

Explanation:

To determine the actual cause of trees dying off, we analyze each option:

• "European sailors taking wood" relates to deforestation but not tree death mechanisms.
• "Rats" (likely black rats) are known to eat tree seeds/seedlings, disrupting regeneration, a common expert - cited cause for tree die - off in some island ecosystems (e.g., after human introduction of rats).
• "Increased hurricanes" can damage trees but is less likely the “actual” (primary, expert - identified) cause here.
• "Island flooded with saltwater" is a broad, less specific cause compared to rat - related ecological disruption.

Answer:

B. Rats. Lots and lots of rats.