加勒比海某岛屿游客人数（2010–2017）

The response identifies overall growth and describes both accommodation groups and the total. However, it confuses a final level of 350% of the starting figure with percentage growth, overlooks the total’s 2015–2016 plateau when saying "constantly", and omits the reversal in the groups’ relative sizes.

Progression is broadly clear, moving from an introduction and overview to the two accommodation groups. However, linking is sometimes formulaic, as in "Moving on with" and "When we look at", and the final sentence combines stages through the unclear connection "although as".

The writer attempts some variety in trend language but makes recurring word-choice errors, including 'amount of tourists', 'raise' for 'rise', 'fixed positive slop', and the misspelling 'Carribean'.

A range of structures is attempted, but errors are frequent though rarely impeding, such as 'who staying', 'neither no strict and permanent increase', and inconsistent tense and article use.

The response covers all three series with a clear overview and relevant comparisons. However, it places the crossover midway through 2015 even though cruise-ship visitors are still fewer at the 2015 observation. The early cruise-ship fluctuation and the island series’ 2016 dip could also be made clearer.

Ideas progress logically across a clear overview and two well-sequenced body paragraphs, with effective referencing and cohesive devices used naturally throughout.

Vocabulary is flexible and precise, with natural phrasing such as 'underwent a more moderate increase', 'surpassing', and 'plateauing', and only a trivial spacing slip ('about.75 million').

A wide range of complex structures, including participial phrases and relative clauses, is handled accurately with only rare, non-impeding errors.