Band 4+: The chart below shows the number of single parents in the United States from 1970 to 2020.

The report addresses the task and provides an overview of the trend, but it contains several inaccuracies and omissions. The data for 2000 and 2020 are incorrect (9 million instead of 9.8 million, and 9.8 million instead of 9.5 million), and the description of the trend in 2020 as a decrease to 9.8 million is inaccurate. Additionally, the report lacks a clear comparison between the starting and ending points, and the phrasing is sometimes unclear (e.g., 'increased by 6 million' could be misinterpreted). To improve, ensure all data points are accurately reported, use precise language to describe changes, and provide a clearer summary of the overall trend. The report falls short of the required 150 words.

The report has a clear overall structure with an introduction and a body paragraph, but the progression of ideas is somewhat disjointed. The use of cohesive devices is limited and sometimes inaccurate (e.g., 'Then its increased', 'However in the next year'). The final sentence introduces a decrease but the phrasing is confusing ('decreases by 9.8 million' instead of 'decreases to 9.8 million'). To improve, use a wider range of linking words and ensure each sentence flows logically from the previous one. Consider grouping data into clear trends (e.g., steady increase, plateau, slight decline) to enhance coherence.

The vocabulary is basic and repetitive, with limited range. Words like 'increase', 'decrease', and 'number' are used repeatedly. There are also inaccuracies in word choice (e.g., 'proportion' instead of 'number', 'escalation' is informal). To improve, use a wider variety of synonyms (e.g., 'rise', 'grow', 'peak', 'decline', 'drop') and more precise terms (e.g., 'approximately', 'million'). Also, ensure correct usage of prepositions and articles (e.g., 'in the United States'). Boost vocabulary complexity to elevate the overall score.

The report contains several grammatical errors and awkward phrasing that affect clarity. Examples include: 'in united states' (missing 'the'), 'Then its increased' (wrong form of 'it's' and incorrect verb tense), 'it goes up' (inconsistent tense), 'there is slight increase' (missing article), and 'the numbers decreases' (subject-verb agreement). The range of sentence structures is limited, with most sentences being simple. To improve, use a mix of complex and compound sentences, and proofread for subject-verb agreement, articles, and tense consistency.