Book Sales by Genre Between 1972 and 2012

The response covers all three charts, but the conclusion misses the main changes over time. It confuses percentages of books sold with customer preferences and calls adult fiction’s 25% share in 1992 a majority. Reporting 22% as around 20% is reasonable rounding; biography’s 8% share in 2012 could provide more useful numerical support.

Progression through the three time points is broadly clear, but cohesive devices are used mechanically and at times inappropriately, as with 'Whereas,' and 'But,' at the start of clauses.

There is an adequate range of vocabulary for describing proportions, but word choice errors including 'frictions', 'an ant share', and 'intimation' reduce precision and occasionally impede clarity.

A mix of simple and complex structures is attempted, but errors are frequent, including 'books word sold form adult', 'liked to purchased', and tense inconsistencies, though the message is mostly still clear.

The response identifies the main shift towards fiction and accurately reports the 1972 distribution, but it reverses the 2012 figures for travel and biographies. The middle chart is underused, with only travel’s intermediate rise mentioned, and some claims about sales should be expressed as percentage shares.

Ideas progress logically from overview to detailed comparisons, with cohesive devices such as 'Meanwhile' and 'Similar changes' linking stages smoothly, though the handling of the 1992 data slightly weakens the completeness of the progression.

Vocabulary is flexible and precise for a data summary, including phrases like 'registered an over twofold increase', 'plunged', and 'witnessed substantial decreases', with only minor awkwardness such as 'securing it as the second most popular genre'.

Structures are varied and mostly accurate, including complex comparative and time clauses. However, “children’s fiction sales, whose sales” has a faulty relative-clause attachment, and “sales of travel books ... it plunged” mismatches a plural antecedent with a singular pronoun.

The response covers all five categories and all three years, with accurate individual percentages and a clear overview. Its main factual weakness is describing travel as declining steadily despite its initial rise from 15% to 18%. The response meets the minimum length.

Progression is logical and cohesive, moving from overview to detail for each twenty-year interval, with effective linking devices such as 'whereas', 'in contrast' and 'meanwhile', though the structure is somewhat mechanical.

Vocabulary is flexible and precise, with natural data-description phrasing such as 'inched upward', 'soared', 'emerged as the most popular category' and 'contracting'.

Grammatical range is wide and controlled, using varied complex structures including participle clauses and contrastive constructions, with no noticeable errors affecting meaning.

The response covers all three charts, gives a clear overview of rising fiction and declining biography and travel sales, and reports figures accurately, with only the unsupported relabelling of children's fiction as fantasy.

Ideas progress logically from overview to year-by-year detail, with cohesive devices and referencing used naturally, though some linking is slightly mechanical in the later paragraphs.

Vocabulary is flexible and precise, with natural phrasing such as grew in popularity, accounting for, and remained the most popular genre, and only a trivial labelling slip.

A wide range of structures is used with strong control, including complex comparative and relative constructions, with only a rare error such as adults' fiction were sold.