The response covers all five stages with a clear overview and largely correct sequencing. However, the heating sentence places cooling within the heater, although the diagram shows a separate cooling pipe. Evaporation is named in the Stage 2 heading but not in the response, and the carbonation tank is left unnamed.
8.0The report progresses logically through the stages with well-managed cohesive devices such as 'In the first stage', 'Once carbonated', and 'Finally', giving a smooth and clear message throughout.
8.0Vocabulary is flexible and precise for a process description, using terms like 'purification', 'undergoes heating', and 'culminating in', with only 'infused to' as a minor collocational slip.
8.0A varied range of structures is used with strong control, including passive constructions, relative clauses and participial phrases. The reduced time clause 'Once carbonated' also contributes to concise sequencing; grammatical errors rarely impede understanding.
8.0